The sad thing is that us talking about him is what he wants. I'd question why someone would want to spend a fair amount of their time writing nonsense they don't believe just to get reactions on a niche football forum, but I try not to kink shame.
I've got him on ignore now, will occasionally click to see what he's written when someone else responds and I am sometimes motivated to respond. Which is credit to him, he got me to bite. The only way to get rid of him is for everyone to do what Sham said, put him on ignore and never respond to his nonsensical ramblings. If you respond, he's got what he wanted.