This is probably the most unpopular of those three to be honest. I guarantee a good amount, if not a majority, of people who like Roguelikes/Roguelites don't realize that the name comes from the game Rogue or that a game named that ever existed (I mean they probably would say yeah I'd imagine some game is called that but the point is they don't know the correlation).Sick of this especially the term "rogue" like.
But I agree, genres shouldn't be named after a title or two that "pioneered" that style. I especially hate Souls-like because what makes a Souls-like a Souls-like is often just dropping a currency and/or progression currency on death with the ability to pick it up if you don't die on your way back. Otherwise, the games don't necessarily have to have much in common. But many of them decide to be designed similarly with obtuse worldbuilding and/or storytelling, a bit more of an initial challenge/learning curve, and being dark thematically. I guess dodges that guarantee invincibility frames is usually there too but again, not really a unique concept. The best argument is that a Souls-like combines most of the elements that make people feel like Demon's and Dark Souls unique from other action games but that would start to discredit plenty of Souls-likes I'm sure.
I think it's fine to just have genres be more broad generalizations and let things within them be unique without acting like we need to have subgenre upon subgenre. I feel similarly about music. There's plenty of bands I've heard that I cannot find another band that sounds enough like them. Sometimes it's just a collective of less than 10 bands that I can find enough similarities in. Those aren't enough to justify a new classification to me.
I'm fine with some subgenres but the broader the better. There, that's my stupid unpopular opinion.