Are there any banned posters who are not in some sense controversial?
Adam Griffin is probably the closest, where he was briefly permabanned for his implication in the 2015 Modleaks scandal; while also being a forum member who was in very high standing.
This was eventually changed to a 2 weeks tempban I think once things had been cleared up I believe. (by none other than Dave himself if I am not mistaken; probably one of the very few times Dave intervened directly)
No, Dave investigated Modleaks, but Nym decided the ban lengths, including the length of the temp bans for Bacon King and Adam.