The negative side of LFR just gets blown out of proportion on the forums, the majority of my runs are fine unless the group starts wiping and then there is no patience. Personally I ignore the drama, I don't turn off chat but I can easily ignore it (in fact I can be bad at missing whispers because I barely look at my chat window). I just go in, try my best (because it's more fun then being a miserable ass) and try to remember it's just a video game.
If it's really starting to grate on you, go into a few random bgs and then it'll make the LFR crowd seem friendly.
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