The problem with mumbles is not his post-frequency, but that he's now deliberately shitposting as a defense mechanism.
He wasn't this bad a year ago. He was obnoxious in a Cliff Clavin,
/r/iamverysmart sort of way. He got called out for using Google as a confirmation bias machine and lacking critical thinking skills. That was annoying, but he wasn't the worst and sometimes he made reasonable points.
It was after that shtick got tiresome and people rejected him that he went full retard. Now he behaves as annoying as possible like a grounded child throwing a tantrum. He relishes all the red rep thrown his way, as if to show that he doesn't care what anyone thinks of him, except he totally does or he wouldn't have started vandalizing the forum in the first place.
tl;dr: