My gatekeeping was referencing a need for "classic nerd" vs "nerd". I find no need to differentiate between what it "used" to mean and what it means today. It makes more sense to categorize the type of nerd to be honest. I don't think anyone is "just" a nerd. They're a nerd in a certain topic or subject.

Nerd means the same thing, just expanded to include different topics. Nerd back in the day could mean various things. You could be a nerd for liking dinosaurs "too much" but didn't mean you knew about computers. So it's just that saying "classic nerd" doesn't really clarify who yorue talking about.