The funny thing with this thread getting so much attention is I *didn't* write a bunch about the history (and pre- and post- history!) of standardizing ActivityPub. Which, by the way, was a wild ride itself. That could have a thread of its own at some point I guess.
I will just say that I'm glad ActivityPub succeeded because the standards process definitely took a few years off my life. And it wasn't just me who did it, it was a bunch of us. But also a bunch of drama. The Social Web Working Group was my first ever standards group and nobody told me ahead of time that it was notoriously the most toxic standards group in all the W3C.
... maybe it's best NOT to revisit all that history. Oh my god. I'm glad we're past it. I'm glad we made it. Let sleeping drama lie. Onwards and upwards.