Well, RIP B3D.
There are still a couple of users who just can't help themselves, despite having already being given a naughty step at least once in the past. Arguing with mods, even The Mild Mannered Janitor™. Who knows why they do it. Maybe it's just enthusiasm, maybe it pays the rent.
IMO there should be a limit on the number of times mods ask an individual to back up their claims with data before said individual gets thread banned. Ideally once, but three times seems like a polite and rational limit.