Because some people who love the PS3 take criticism against the console as a personal insult. It's offensive to them when Valve flames the PS3, and so they flame them.
Blizzard didn't insult a console, so those people who love those consoles don't flame them.
Ironically, some of these people who were insulted, try to imply that Valve isn't one of the best videogame developers, and to the contrary, they imply that they are over-rated, or "not that good." Of course, this is just as fallacious as saying that Blizzard sucks, and while it's an opinion, it is an opinion that almost no one who actually played these Valve games would agree with unless their opinions were colored by the insult Valve gave to their console of choice.
Truth is, The Orange Box taken as one game, is one of the best games of all time, and it's fairly new. Valve's game history speaks for itself. It's amazing, and they are one of the few companies that can be compared with top developers like Nintendo, Sony, and Rockstar North, consistency wise, imho.
I don't need your console war.
It feeds the rich while it buries the poor.
You're power hungry, spinnin' stories, and bein' graphics whores.
I don't need your console war.
NO NO, NO NO NO.
