Are pegasisters as degenerate as bronies, do they masturbate to ponies too? Or it's normal that grown women like ponies since that's what their childhood maybe was about? Is it normal for a grown up women to be a mlp fangirl? I thought its fine to see women like mlp, but I was told that apparently its also weird, but not as weird as bronies.

There aren't any actual girls in this fandom, anon.
All of them are either dykes, traps, or just tagged along with their boyfriends.