Long time member here
Since I first appeared here under a different name(s) in 2000-01, which I gave up as opposed to having been banned, I kept in touch with some old members. I don't know of any who have died, but there are some banned members I know who have come back under another name and in most cases they have behaved.
Some members started here as high school students and have since finished college and graduate school and/or got married and now have kids of their own. In a few weeks, I celebrate 10 years on this forum, on and off.
There was this one perennial banned user, college student in UK, who kept on coming back and terrorizing the Macrumors community via the many different computers at uni, but he/she really just said things in an opinionated way as to really being a trouble maker. But they really pissed off thin skinned politically correct, Mac correct types. 🙂