Of course the home button was such a simple UX though:
* Press place your finger on it to use Touch ID
* Press once to go the home screen
* Press twice when unlocked to bring up task switching
* Press lock button then press twice to initiate Apple Pay
* Press and hold to talk to Siri
* Press at the same time as the lock button and then release to take a screenshot
Yeah, it was such a SIMPLE bit of UX. If you’re a UX expert arguing for the supremacy of a verb with at least six overloaded meanings, imho you’re UX charlatan.