Yes, it’s a big myth that hot girls are bitches. Some are, sure, (I’ve dealt with a few sassy strumpets), but on the whole pretty girls are nicer than ugly girls. If a woman is treated well her whole life because she’s pretty, she’ll tend to think the world is a great place overflowing with kindness and love. Many betas confuse hot girl rejection for bitchiness, when in reality most hot girls reject men in exceedingly polite terms. It’s the fugs and marginal girls who are nasty bitches when they reject the betas they think aren’t in their league.
I noticed this odd behaviour at my workplace. None of the hot girls were bitchy. Yet, especially during lunch time, a lot of the ugly ones would develop scowls and avoid eye contact. This meant that the ugly girls didn't talk to me and the pretty ones were always social. I didn't mind.