I swear, the older I get, the harder it is to keep up with these acronyms.
That’s a common phenomenon, it’s called AAAAA (age associated absence of acronym awareness).
NEET is a term that came out of the 90s in the UK, and was a borrowed acronym in Japan after that. not a new term by any stretch of the imagination and is barely younger than the modern internet itself.
In academic circles, sure, but it’s fairly recent that it has been seeping into internet language, mostly through 4channers who started using the term for themselves in a self-deprecating way.