If Valve isn't relevant to PC gaming right now, I'd like to know who is. Valve could be working on another game right now and release info tomorrow and most of you would look ridiculous because they didn't hype it for 5 years straight before hand. And this is a studio which _just released an awesome game_. I'm not sure I understand the issue at all.
The engine is dated? Yet most engines still look like shit compared to Doom 3 and Crysis 1. In fact, so many engines these days fall into a massive gray area, where 1 feature is good and 12 others are cheap imitations.
Maybe I'm a bit jaded these years, but not only have I not seen an engine that screamed truly revolutionary, I also don't see any video cards worth upgrading my GTX 295 to yet. Until such a time exists, I'll keep enjoying the fact that, unlike most shitty developers, Valve is actually bringing unique ideas to the genre and giving people alternate and interesting game play mechanisms.
Edit: I mean really, out of all the devs to bitch about...