Hi.
Within the past week, Philippe has posted the Wikimedia Foundation's global ban policy: https://meta.wikimedia.org/wiki/WMF_Global_Ban_Policy.
The page itself is interesting, as is some of the related discussion on the talk page. I'm not sure if wiki bans strictly fall within security theater, but it seems fairly clear that these bans are for show and not much else. It's the Internet, after all, and anyone can edit. Under the current scheme, the best we can do is try to revert and prevent bad behavior alone. Attempting to ban individuals has proved impossible.
MZMcBride