They've actually never had a second mouse button. They started letting you fake having a right mouse button with touch but they never put the second switch in.

The first switch is also faked. :-) Just try tapping it with the Mac turned off.

Well on trackpads. Their mice actually do still have a switch. Also Apple's definition of "off" these days keeps the trackpad and keyboard alive so you can click or press a key to turn it on. Why? I have no idea and it makes doing things like cleaning the keyboard really annoying.

So overall it's more of a movable trackpad that pretends to be a mouse :D