some ppl are into the whole mean bitch persona. I personally don't like it, (my fav is Margie) but to each their own. I think a mean dominating (and sometimes absolutely evil/psychotic) woman is what a lot of people look for from a giantess game, since the common fetishes associated with giantesses are being crushed, getting stepped on, being swallowed/digested, being at the mercy of a hot woman who could destroy an entire city without effort.
I think a pretty valid complaint is that in the hell route, most giantesses seem to have their personalities centred around killing/crushing tinies. Like I wish they had more personality to them. "I know you enjoy crushing humans, but what else do you like? You've got like hobbies or passtimes that don't involve crushing tiny ppl?"(no offence to them that like those girls)