That's right. When you first plug in an Apple Mouse or Magic Mouse it is in one-button mode. However, any multi-button mouse will have all the buttons enabled. This is probably why some people think that multi-button mode is the default.
So let me clarify – all apple hardware comes by default with the secondary click disabled.
It was the case when I purchased my magic mouse last year, and when my wife bought one a few days ago. Prior to that she'd never plugged in a mouse to her MacBook Pro.
Huh, maybe the external devices are different. Built-in trackpads come configured to use two-fingered clicking as right click by default, as far as I've seen.
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.