While Kwuk's threads are typically very similar to the resident speculation forum spammer/bot, perhaps it's best to leave one active in order to collect the garbage?
It has never been confined to a singular thread. If you analyze their post history, you will see that a decent amount of threads were created through time (depending on the status of the previous ones).
He might be involved in the spam in the speculation sub but I doubt for the rest (bitcoin = ponzi... It will fall blablabla...) since he used the same words as the bots sometimes
Personally I like his failure, just ignore him and let us laugh a little bit (till he didn't badly break the rules ofc).
It wouldn't be a problem if everyone reading that sub-board was actually experienced in these sort of things. This may cause effect on your un-educated and gullible reader though.