-a ban that could be removed as soon as he agreed to stop violating what is either a clear norm of the community or an outright violation of the terms of use of the site [..] Banning Will (for as long as he blatantly defies the rules

Emphasis mine.
The way you phrase this suggests that the Will_Newsome account is admitting to running the similarly named accounts.
Do you mean to suggest this, or merely that it should nevertheless be obvious that he's doing so?

As far as I can recall, he has made no explicit claim either way, though he has made various statements that seem clearly intended to imply that he's not responsible for them.

That's not to say that he can't be banned for them anyway, if enough people feel there's enough evidence. I just want to be clear about what's being claimed.