It's rude to judge someone for liking a celebrity.
Pete is on a date with Stephanie who is known for being artsy and deep.
Pete wants to impress Stephanie.
Pete talks about the things he is passionate about and shares his enthusiasm with Stephanie.
Pete talks about stan culture and how shallow and silly he finds it because he thinks it will make him look like he's above popular culture.
Stephanie thinks Pete is an interesting and self-assured guy and the date goes well.
Stephanie finds Pete negative and pretentious and the date goes badly.