esuna, I think the point people are trying to make is not blind hatred for CS:CZ... they're expressing frustration at valve's habit of disappointing us lately. HL2 delays, buggy steam, ads for and pre-loading of CZ built in, marginalizing of the NS community... so people are saying, "haha, look, they've done it again! surprise, surprise! gg valve!"
I'm not even saying this is how I feel, just providing perspective. personally, I think it's pretty impressive what Valve has released for free over the years, so I'm not particularly upset (though I'm NOT surprised at this latest botch-up).
anyway, the internet makes us ALL loud-mouthed and opinionated. if we were all apathetic about everything, boards like this would be pretty boring to read.
besides, pettily bitching about people's petty bitching shows that you do NOT practice what you preach, so be an example! be neutral! as you say they shouldn't play the game if they flame it, so you shouldn't read the thread if you detest it =P