> comic books and star wars no longer considered nerdy now that nerd culture is mainstream?

Star Wars was never considered nerdy, it was mainstream even when it released 44 years ago. Same thing with the superman movie, it was released around then as well and was a huge mainstream success. So I'm not sure what you are talking about.

That's clearly not the sense in which the word "nerds" is used here.

Yes. It’s just mainstream cringe for normies now.