My sis did this when I introduced her to bernie sanders

yup. The last two.

Oh yeah, but then I hate it when other people do that shit to me

I can relate. I’ve been on both ends of this- both very much into things considered “dorky” back when that was very bad and not even slightly “cool” to most anyone but other “dorks,” and when friends or family have recommended things to me and I brushed them off or teased but later gave them a shot and really liked the thing. It’s somewhat normal for people to feel this way- although we should watch ourselves and not be toxic about it- but we do have to remember, people and their tastes change, and sometimes people just aren’t ready for things yet.