Let it all out, that kind of resentment can really get to you.

I think you're looking at it the wrong way.  Nerd culture isn't being ostracized like it was 20/30 years ago not because it's trendy or a bandwagon, but because it's just a part of culture for everyone now.

I played video games through the era of Jack Thompson.  It ruined the relationship I have between me and the rest of my family.  It's not mentally healthy to resent anybody who looks mildly jocky who picks up a controller to play Halo just cause I got called gay for playing video games growing up.

I don't think the fake nerd trend exists anymore.  Approaching your hobby with that kind of defensive mentality thinking so many people are just pretenders is exhausting.  I think it's better to accept the mainstream appeal as an olive branch rather than getting upset at what you made sound like culture appropriation.