I personally try not get bothered by it, but it's more of a weird-moral thing for me than a "I genuinely don't get bothered by it" thing. It gets annoying, but pattern-recognition's natural afterall so I can't blame people too much for saying "hey this character looks like that one!" (and I'll admit, I've faved & liked characters before just bc they look like my favs so it feels hypocritical if I chastise people for doing it ig)
For one I am bothered by, Prisma sometimes gets compared to ALT from pop'n music, which is warrented tbh she started as a Pop'n fancharacter based off her. But it's kinda annoying because I've long spun her off into an original OC and only being recognized for older fandom stuff has gotten on my nerves a lot lately. (hard to not get peeved when I'm trying to move on to original work yunno?)