> One button is better than two, for people who don’t know how to use two.

It's like the three seashells. They don't know how to use them.

In the early days of Macintosh they tried hard to make this true. The excessive and inconsistent use of click vs double-click in apps even then was confusing.

These days it's hard to find an app that can get by without Cmd+click which is harder than click on the right button, which would be even easier if the right button was physically distinguishable. Long-press is super annoying as well as force click--I never want the action that comes up when I accidentally force-click. With the prevalence of touch phones, the two-finger-tap might be the easiest of them to remember (if not as precise).