Commenting to say no comment is not commenting. Commenting to say "no comment except for any of your guesses are wrong" is also not commenting. Either don't comment, or comment substantively to end the discussion on the subject.
Are you saying that you don't have enough to go on to believe him when he says "we aren't canceling any projects. No, we aren't changing any priorities or projects we've been discussing. No, this isn't about Steam or Linux or hardware or [insert game name here]"?
Personally, I get from that that they're still working on whatever steam box thing they've talked about recently and I still expect to hear about it sometime this year (valve time), that they also didn't cancel any game projects, and that Valve and Linux still seem to have a potentially healthy future ahead of them. Taken together, this suggests to me that there was no major strategic shift at valve, at least in any of these categories, which were exactly the things I was wondering about after hearing the recent news about firings (steambox and linux, anyway).
So it seems like substantive information in that it addresses what I was thinking about, but now you're making me wonder if there's some reason to doubt what I was hearing? Or maybe those just weren't the things you wanted to hear about?