I don't understand gacha players, do they want powercreep or not?

Since sanby released I've noticed talks about how she's not worth pulling because she doesn't do that much damage, and I've occasionally seen doomposting about how hugo will be dead on arrival because he probably won't be as strong as miyabi and I just don't get it. Isn't it better to keep powercreep low and focus on pulling characters you like? Who cares if anby isn't THAT much stronger than harumasa currently? Personally I'd prefer they release mid characters who don't shake the meta.

Edit: Yes I know the entire gacha game fanbase is not one single entity, this is just a common thought ive seen going around