Everything in the Mirror timeline makes it highly unlikely that the same people would exist as in the Prime timeline. There’s just something about that universe that makes such extreme improbabilities happen regardless.
I think it’s explained as the Mirror Universe somehow being specially connected to the Prime one. But yeah, it’s really just an excuse to show known characters being assholes.
Everything in the Mirror timeline makes it highly unlikely that the same people would exist as in the Prime timeline. There’s just something about that universe that makes such extreme improbabilities happen regardless.
That plot stupidity is part of why I low-key hate all the mirror universe stuff.
I think it’s explained as the Mirror Universe somehow being specially connected to the Prime one. But yeah, it’s really just an excuse to show known characters being assholes.