I really think for the most part - people here are GREAT. I honestly haven't seen any rude posts but will take your word for it.
Look at the BIG PICTURE - more often than not....Threads are usually very helpful and most people really do care - This site is full of some pretty awesome people - I know here and there we'll see posts that make us shake our heads - but when you get THIS many people posting on one site - things are bound to be said that rub us wrong. Being a pretty active member... I think the site has far less controversies than it used to. IF you see someone being outright rude - maybe try pm'ing them in the future ? They may not even know it. Everyone has their own posting style...some are more blunt than others & I've seen apologies made just for that reason alone...