User blog comment:MakeShift/Discussion on post-Crisis changes to the wiki/@comment-3221148-20200117221220/@comment-807326-20200118113122

It is 100% an assumption. You are assuming they have the same backgrounds, you don't have definitive proof. To argue that we shouldn't create new pages simply because the characters will effectively look and act the same is simply lazy. They may have vastly similar histories, but this doesn't mean they will. Hell you could argue that up until a point, Harrison Wells of Earth-1 and Earth-2 were nearly identical, yet they're different.

In this instance, Earth-Prime is its completely own thing. It is not Earth-1, it is not Earth-38, it is not Earth-BL, nor is it anything other than its own new universe. It's an amalgamation Earth, as are its characters. As the example of Barry and Kara meeting shows, the characters are by definition different. And to simply say that some are and some aren't is just denial. DC completely rewrote the characters, but this is only part of the reason why the pages were split - they were also split because they were brand new versions of characters. I'm not sure why this is so incredibly hard to understand. If we somehow have confirmation that they're the same exact characters through some means, then sure, we'd be inclined to keep the single pages, but for all intents and purposes we've been shown that they're new.

And good lord for the last time, Flashpoint was just an alternate timeline in the one universe. Why they created new pages for the characters in Flashpoint is beyond me, but I widely disagree with the choice to.