477
Threads is officially starting to test ActivityPub integration
(www.theverge.com)
This is a most excellent place for technology news and articles.
I think FediDB coined the term. It definitely existed before Threads had an official name though.
I don't disagree because I don't know. Regardless, I hadn't seen anyone use it until threads started up.
Even then though, people only use it to describe this part of the fediverse, which Threads won't be a part of.