As a result, the installed base is that integrated graphics crap
It's a spurious argument he makes, since the integrated graphics aren't THAT bad. The high end Intel model plays Doom 3 and HL2 just fine. Sure, it's no GX7900 or XL1900, but for people who don't need the bleeding edge, it works pretty decently.
Yet you won't find too many people, other than the vocal minority, that didn't like Ep1. Most people really enjoyed it
True, but it doesn't invalidate the argument that Ep1 was just a few new levels with the same textures/monsters and weapons. Again, name me one developer BESIDES Valve whom that would have been accepted of? When the Doom 3 expansion pack was released, everyone screamed bloody murder that it was "just the same as Doom3."