Why are lots of girls I've dated so mean spirited?

Im not into the redpill women are horrible narrative. However my last 3 previous girlfriends have all been major bitches. For instance they would do stuff like tell me that "im dumb as fuck" or that "im a fucking cheapskate". Even after multiple times of warning them to stop. My current girlfriend who is super nice says that those girls I've previously dated are whats called "modern women" because they were spoiled and entitled. I don't really believe that all women hate men obviously because I have a loving girlfriend now. But that doesn't change the fact that it seems like the large majority of them have unreasonable expectations from a man and when he doesn't deliver they throw a temper tantrum.
Why are lots of girls I've dated so mean spirited?
Post Opinion