I can't stand the friends of my girlfriend
Why can't you stand her friends?
They are vapid idiots.
I understand not liking all the people your partner hangs out with. But as her partner, you should try to keep the peace and get along with them for her sake.
I am challenging the foundation of their friendship. They are stupid and can't mind their own business.
If you can't play nice maybe you should just avoid them. She needs to be able to have her friends and if it ends up a deal breaker the sooner you let her know the better.