I dont know 333, his jokes are quite reminiscent of fuzzy2bucks, virtually along the same lines. But, besides that, roy1 virtually has no bike related posts of any kind. If he had, oh I don't know, balanced it to at least 70% jokes and 30% bike, then it might be different. But is is about 97% bad jokes and 3% bikes.
We are predominantly a bike forum. If roy wants to spam jokes, I am sure there are plenty of joke forums that would welcome him.
Sure we do not have to read the jokes but as others have said, it clutters up the unread post list and can't be filtered.