[diffeomorphism]

Nothing would be "broken". If you have a multitouch trackpad you can use A, if you have a mouse you can use B, if you have just a keyboard you can use C, if you have just a touchscreen you can use D,...

Same confusion years ago with the login screen. No, you don't have to swype. You can or you can press any key, just like on any PC ever.

[throwaway4400]

I didn't see that information on the tour screenshot. If it is indeed the "same confusion", then that points to a communication problem.