The quality of a community forum is reflecting the quality of the members.
As long as there are people driven by their uncontrolled emotions which are reactive rather than constructive and expectations are superseeding facts and real potential we'll see some mess around.
They say it's human nature.
However it's easy to prove otherwise - just needs different decisions in an actual situation.
Another element which causes trouble is that what people think about something appears to be more "relevant" (but at least more important) than the object they are thinking about. I usually scroll through those comments where I find sentences starting with "I think" and replies starting with "Yes, but I think". They are just aiming to support/argue what thoughs people have rather than the game or topic itself.
Judgements can also be dangerous - making judgements on anything (the game elements, each other, etc.) will most likely trigger a response based on submission or rebellion. As another "human nature"-thing is based on personal identification with opinions or any other elements ("I am what I said", "I am what I expect/suggest/demand" etc.) these are ending up with the feeling of personal offence rather than recognizing the borderline between the personality and the topic itself.
So it's all about consciousness and communication. Or more about the lack of them.
This dust may not settle as long as there's no will to change attitude and no will of picking up more knowledge about control and consciousness. And it's not a steep tendency in the last thousands of years since the first written sources.

So we may have to live with it and develop some skills not to consider or respond inadequate entries.