Of course he can. And he already does I assume, considering his other remarks in the comment. So including him in the 'we' does not really make sense ... if you consider it a question. Which it is not.
> "Can you ban..." who is "you" in that case?
That would be us dude, but not him as there is no reason to ask him, his position is clear.
So he is telling us what to do, dressed up as a question.