Nope, this is the best I've ever had, and I'm pretty sure I never lied to Gaben.
IIRC in one of those surveys (even though I mostly got connection speed ones), it actually automatically got my specs right.
So maybe that function, at least once, worked fine, but then they decided to drop it as, well, meeting the minimum requirements doesn't necessarily mean that a game will run, so it could have been a problem for Valve, like granting to people a mean to "RMA" games.
Or, most likely, they trashed it into oblivion along with almost every other API functions.