I agree, people attack over the slightest thing. Fortunately this forum isn't too bad for that sort of thing, as the FE keeps a fairly tight rein on proceedings. But some forums are unusable because of it.
I often play an online game (Pax Galaxia) and it has a comments system. Some of the comments are unbelievable. I have learnt not to get involved and just ignore them, but they can be disturbing.
There is a lot of very angry people on the internet.