You're the one who is making it into a whinefest. Really, if you don't like a thread, stay out of it or make a report, if the moderators feel it's a bad thread, actions will be taken.
As far as game forums go, it's a good thing to follow the "if you don't have anything nice to say, keep your mouth shut" mantra. Unless it's constructive critisism towards the game, of course
I normally avoid moderators like the plague but I can certainly see how Wraith has gotten tired of beta discussion.
(Yes I know most are locked and/or old but I didn't even have to look 30 seconds to find most of these and they probably all have the exact same posts)
http://www.gamesas.com/index.php?/topic/1104405-is-there-going-to-be-a-brink-multiplayer-beta/
http://www.gamesas.com/index.php?/topic/1105647-any-kind-of-beta-comming-out/
http://www.gamesas.com/index.php?/topic/1102578-brink-beta/
http://www.gamesas.com/index.php?/topic/1108933-beta/
http://www.gamesas.com/index.php?/topic/1109635-beta/
http://www.gamesas.com/index.php?/topic/1110557-beta-poll/
http://www.gamesas.com/index.php?/topic/1110848-is-there-a-beta/
http://www.gamesas.com/index.php?/topic/1094927-will-there-be-a-beta-test/
http://www.gamesas.com/index.php?/topic/1098380-beta-sign-up/
http://www.gamesas.com/index.php?/topic/1098324-beta/