The warning is very clear written on the manager's profile, only blind and deaf people don't think the 1xbit site is a scam, the rest they know 1xbit is a scam site.

If you visit here: https://bitcointalk.org/index.php?board=83.0, you will get 379 pages of all cases about fraudulent web/sites, meaning: 379x20=7,580 cases that should be eliminated in this forum, including 1xbit site, is it possible, I don't think so.

For 1xbit campaign participants, ban them no, it's impossible, they don't violate any forum rules, even if there are 1-2 participants, it is already established in the case that they violate.
But there is a policy that the admin can take here, for 1xbit participants by not displaying a sig for 1xbit participants, again it's not an acceptable idea with a 100% agree decision, back to basically "not moderated".