I have a feeling that most people who write the Wikipedia page are of the "younger set" and didn't actually use the II's back in the 70's and 80's when they were first released, but rather later as part of the "retro thing." That's the case for me, in fact.
OTOH, csa2 goes back to 1990 and is dominated by college students/faculty, as are most all Usenet newsgroups of the period.