Comic fan prejudices come and go, as series evolve, are cancelled, change writers or artists. There is no one type of Thor fan, or one type of Giant Days or Steven Universe fan.
Even at the apex of Bronyism, there were wonderful people and children who enjoyed reading "My Little Pony" comics. And while there are some people who read a bunch of comics, which also include "Buffy The Vampire Slayer", Buffy comic fans have been consistently The Worst for over a decade now. (Buffy TV fans are a wide spectrum, and I don't see them as One Type Of Person, whereas "I only read Buffy" comics fans have all been Exactly The Same.)
Today a woman came in making a face like she farted but really wanted you to believe that it wasn't her.
Buffy Fan: "You don't have Buffy comics."
Me: "We do. Are you looking for issues or collections?"
BF: "I'M LOOKING FOR BUFFY."
Me: "Yes. Ok. Well, we have issues over here, and then some collections over there."
I walk away. Quickly.
BF makes a ton of faces at the books, and then says "Do you sell plastic things to put books in?"
Me: "We sure do." I lift one out of the drawer in front of me to show her.
BF: "I need them because everyone in LA always touches all of your stuff."
BF: "They stole my cell phone once, and I never got it back. And once, they touched all of my Diet Cokes! All of them! And then they PUT THEM BACK."
BF: "And my bananas. MY BANANAS."
Me: "You're bananas."
BF: "I'll be back."
Me: "I don't doubt it."
Then she left. Without buying anything.