Well, this is really a Meta discussion since it is about the rules of the boards.
Diaglo as has been said doesn't break the rules. His posts are hardly ever actually rude and on topic, just suggestioning OD&D. There really are no double standards on EN World. I've been around for ever, I know most of the people running this place, and have been warned on occasion to behave. Diaglo might have also been talked to by the Mods., They do that stuff behind the scenes if they can, and never talk about it to the public.