I think you're off on that, Mike. I just tried making a new user, and two finger tap for right click was not enabled on my MacBook Air. I do have two finger tap for right click configured for my usual user.
Been doing Personal Setup in Apple stores for a year now and I can assure you that all new macs come out-of-the-box with secondary click enabled for Trackpads, Magic Trackpads and Magic Mice.
Try a two fingered physical click, rather than a two fingered tap. I just checked a one-off test account that I'm sure I never reconfigured, and the former is not enabled, but the latter is.
