Except it gives rise to double-click, triple-click, shift-click, command-click, option-click, etc.

Double-click was always easy to teach, to my knowledge there isn’t a triple-click. There wasn’t command-click until OSX.

OS X has been around for 21 years. Many readers of hacker news aren’t that old yet.

Triple click is only a thing on iOS, apparently. Thank you for the correction: https://support.apple.com/en-us/HT204390

Double click is easy to teach but it’s sure as hell not discoverable. Whereas second and middle button advocates have, to me, semi convincingly claimed that they could also be taught through consistent application. In other words, not better but not worse.