Way out of scope, but I'd argue that "incel culture" absolutely existed in the 80's (one of the reasons I picked the term). It just hadn't been named yet, and no one had thought to try to politicize its leanings. And yeah, I say that as a long-recovered 80's incel.
In the same way that "pro-life" does not literally mean anyone who is in favor of life generally, I think you're misusing that term, which refers to a particular culture that did not exist in 1978 or even 2004. Come on, somebody has to defend 80s nerds. ;)