Exactly, they don't need a reason and furthermore, they are able to invent a myriad of them on the spot.

But it makes no sense, the backslash would be too enormous for this and would yield basically nothing, let's not forget the forum is not even close to being completely anonymous, it's behind Cloudflare just to give an example, plus a few of the participants here leave so many traces that probably the most incompetent agency in the world would be able to track them, just grab addresses and force exchanges to disclose who has used it if they are theirs.