...getting a bit tired of all the "Doom and Gloom" threads/posts on forums and groups?

It just seems that wherever I look there are loads of people complaining that the latest edition has completely ruined their army beyond any means of salvage or hope.

Has 6th REALLY caused that much of a shift that entire swathes of gamer's armies are useless or is this just the "loud minority" again?
I've had to change a few things in the armies I use, but no-where near what I see going on in forums/groups.

So, is it just me, or has 6th REALLY destroyed entire groups of armies? I feel like I'm being cruel to others by saying they're just looking at their codex in a poor light...