Yes, in the signature campaign, there is something called "post bursting" and "maximum number of posts a day". For the maximum number of posts, it is clear enough although it can be varied, depends on the bounty manager. Usually, it is around 4-10 /day. But for post bursting, I don't know about the limitation. I mean "when someone can be categorized doing a post bursting?"

Regarding post on two forums with the same post (100%). I don't see any regulation about it. But it is clearly not a plagiarism case because it is his own post. And about he is the administrator of another crypto forum, I'm a bit surprised to know it. Really don't expect it!