alt Hacker NewsI understand the design principle but I would argue it's a bad implementation principle.
Engineering attention is finite. Why would you spend time thinking about 8 clicks when most people will only need ~3?
Not all user-action possibilities are equally important, and if they are, then you better have infinite resources to spend on engineering.
It's not really a question of how many taps they support, but how fast.
This same issue also seems like it would prevent you from quickly double-tapping the button to turn an image upside-down, a much more common use case.