>>31558
Bullshit as in stupid? That's subjective. But bullshit as in not true? No, it's how it's explicitly worked since the Crisis on Infinite Earths. Actually, since the multiverse was first created with the introduction of Barry Allen, then Flash of Two Worlds, Crisis on Earth-One, and whatever story first bothered to treat Superman, Batman, Robin, Wonder Woman, Green Arrow, and Aquaman of Earth-Two as separate characters. Action Comics #1 officially takes place on Earth-Two, as do most other stories from before 1954 (that's when they did a story that claimed it was the first team-up of Batman and Superman, which meant the Justice Society wasn't canon, which meant this was a new universe). But there was no neat cutoff point. All those Golden Age stories were still considered canon, except for the explicit contradictions. That "first" team-up of Superman and Batman treated the issues right before as canon, which treated the issues before them as canon. They just forgot that Superman and Batman were honorary members of the Justice Society. Later, Flash of Two Worlds gave them a convenient excuse to say that those stories took place on Earth-Two, and the ones that were implied to take place on Earth-One, by the fact that later issues continued their continuity but with contradictions, did still happen, just with little alterations to make those contradictions no longer be contradictions.
Note that sometimes they still just fuck up in ways that aren't fixed even by these bullshit near-catch-all explanations. For example, in Swamp Thing (2011) #1, which came out the first week of the New 52, right after Flashpoint, Alec Holland wakes up alive again after being dead for a long time. This is a direct continuation from the end of Brightest Day, which ended the week before. Old pre-Crisis continuity established that Alec Holland wasn't really Swamp Thing, as we thought in the earliest issues. Holland died but his mind was imprinted upon an artificial swamp creature that then thought it was Alec but later learned it wasn't really. This persisted through many "reboots," including Crisis on Infinite Earths, Zero Hour, Infinite Crisis, and Flashpoint. Brightest Day then involved the real Alec Holland coming back to life. Flashpoint happened directly after, so if you didn't know that it happened in Brightest Day, you could almost think Holland being alive again was an effect of Flashpoint, but it wasn't. In Swamp Thing (2011) #1, Superman meets Holland and talks about how he came back to life before too and knows it's weird. Holland quickly ends up becoming Swamp Thing for real this time, and the series is now about him. He even meets the previous Swamp Thing, the one the series was always about before, and who has all of Alec's memories from before he died, and also all the memories from all previous Swamp Thing stories.
Anyway I don't just bring that up to talk about how Swamp Thing canon has never been significantly fucked with. I bring it up because Post-Flashpoint Superman said he died before. New 52 rebooted Superboy (Kon-El) and gave Steel a new origin that was closer in time to Superman's first appearance instead of after Superman's death, but we were clearly supposed to figure that The Death of Superman still happened, only Steel already existed and Kon-El didn't play a part in it. Or maybe we could say the Pre-Flashpoint Kon-El was a different guy, but well he was never mentioned again, at least. There was also a new Cyborg Superman appearing in Supergirl stories, but he was such a different guy from the previous Cyborg Superman, Hank Henshaw, that there was no reason to think they couldn't both exist.
Later, Doomsday would reappear and they didn't act like it was his first appearance.
Eventually, Superman died again in a separate, very different story. The Superman of a splinter timeline that split off right before Flashpoint then came to the main universe and merged with the soul of the dead main universe Superman, which merged their histories and therefore the history of the universe. One of the explicit differences pointed out between them here was that The Death of Superman storyline only happened to the Pre-Flashpoint Superman, despite Post-Flashpoint Superman explicitly referencing it on several occasions, including the very first week of the New 52. In short, they fucked up. They should have just continued acting like all previous stuff was still canon unless directly contradicted, which is what they were doing most of the time, but in that one story, Superman Reborn, they wanted to differentiate the two Superman, and thus fucked up and said Post-Flashpoint Superman didn't do something they already said he did.
Now, there are still other explanations for this. Plotholes are baked into the plot itself. Things like Superboy-Prime punching reality being used to explain things that would otherwise be plotholes between Zero Hour and Infinite Crisis. Right around the time of Superman Reborn (the story where I'm saying they made this mistake) they did make it a plot point that so many Crisis-esque events happening so close to each other (Darkseid War and Convergence, primarily) was weakening reality itself and breaking things, AKA causing reality to warp, AKA causing plotholes. Also the existence of guys who can straight up warp reality like it's no big deal, and the existence of guys who exist outside of the main continuity and are essentially just avatars of the writers and editors and even readers, and thus shape reality itself, and things like characters sometimes being able to escape their continuity and write in their own books to change their own history, all makes the few remaining plotholes easy enough to gloss over. But yes, some unexplained ones still happen.
But in general, anything from before a Crisis that isn't explicitly contradicted still happened. Action Comics #1 is still canon, just Superman's name is Kal-El now, not Kal-L. Hell, Detective Comics #1 is still canon. Slam Bradley still went around stomping chinks in the past of current continuity. Actually the bad guy from the cover of that came back as a major villain in that book about the chinese knockoff of Superman in like 2016. I bet New Fun Comics #1 is still canon. Though frankly, I have no idea the last time western hero Jack Woods was actually referenced. But his existence also wouldn't contradict anything, so it would be stupid to say it's not canon. It's just not terribly relevant.