I actually don't mind the long comments when they are part of an active discussion. The topic SBF started ("How did JWs arrive at a clearer...") has a lot of very lengthy posts, but they're delving into an area that has centuries of research and theory and discussion. I just stay out of those, but I don't see them as a problem, because there are people taking part and having an in-depth discussion. Way over my head, but not a problem as I see it.
The conspiracy theory stuff has gotten tiring, because it consists of dumping bad information in large quantities in order to avoid having to discuss any of it. The only time those are interesting is when two nuts start throwing crap at each other because they've latched on to conspiracies that are in opposition. Because the whole thing is based on acres of complicated gibberish, those exchanges can be amusing for a short time. Nothing is more effective than having them hold mirrors up to one another.