Not that it matters terribly (since the important thing is disseminating the ideas), but... I had thought maybe I had come up with the term "user freedom" (I certainly was pushing for it) but, @luis_in_brief demonstrated that's not true! The Franklin Street Statement, which had a big influence on me, already had that term in it in 2008, which certainly precedes when I would have started pushing it by a few years: https://web.archive.org/web/20090129140803/http://autonomo.us/2008/07/franklin-street-statement/
Anyway, happy to be corrected. I think new-fediverse-participants are probably fairly unaware of autonomo.us, but in large part the fediverse as we know it today exists largely because of the thinking done there.