Has any game successfully stopped a "decline" once it has begun? Taking punitive actions might slow it. Or they might accelerate it. I agree the mood here can be pretty negative lately, but I think that it is merely a cycle and not a steady trend of decay. Raising a big ruckus about it is only more negative can could help make it a trend. I am quite sure that there were plenty of "attacks" and poorly worded "whines" in the past. Why all the emphasis on the ones happening now?
If the current "policing" is about getting people to respect each other, especially the people working so hard on the game, why didn't it start a long time ago with the nonstop whining about LW planes or the Hog 1C? I personally don't ever let anything posted on a public internet message board really upset me... just letters on a screen.
However, some posts do make me laugh, and some even make me happy. Like the announcement of the P-40B

I can't control how other people post or respond. Nor do I really believe I should.
Yes, banning is censorship. What I was saying is that weeding out a few individuals is a normal acceptable thing that can solve a small problem. Introducing a policy that impacts a significant number of the members would be unacceptable. Public libraries don't generally make pornography and profane material available to children, but if every book that had a curse word or nude photo was removed, the library would be half empty losing many books that are worthwhile. WB3 and WW2 online have leaned to the one extreme while AH was always open. Given a choice between a "positive" board ruled by an iron fist and a "negative" board that is open, I prefer the latter. Of course it is best to have a board that is "positive" by its very nature, but by definition you can't make people be that way. You can however have a community that attracts positive individuals and ignores or rejects negative individuals without using banning. But once again, that is not something you force.
You either have a good community or you don't. No amount of banning will change that. I think this is still a great community regardless of any negative posts. I don't accept the idea that bad apples make the whole bunch rotten. If other people view the community negatively based on a few bad posts, maybe the community is better off without them?
It is HTCs business. They can and will do whatever they want with it. But as long as I am free to give my opinion here, then I will. When I am not free to give my opinion here, then I will find someplace else. As long as I enjoy the game, I will play it. When I don't, I will find another game. The two subjects, the message board and the game, are somewhat separate topics. However, one of the best aspects of this game is being able to speak directly to the developers knowing they are listening. I would like to retain my right to whine about any topic any way that suits me

If my whine is invalid or stated in such a way as to be insulting, can't others just ignore it? Trolls only cause problems when others respond to them. Otherwise, their posts fall to the bottom of the pile unread.
Understand that I realize anything I say is all speculation for me. I have only been online for a few years and I don't think even real psychologists have studied the dynamics of internet culture enough to know what is "right" and what is "wrong" and how to correctly regulate the behavior of people in this medium.