So here’s a thing.
Cover your iPhone 7 home button with material (like from a
t-shirt) and try to click it.
I think I worked it out, the TouchID sensor is what’s making the
No sensor connection, no click.
Never occurred to me to try this. It’s the capacitive ring around the Touch ID sensor that needs contact with skin — that’s what turns on the sensor. This means no home button clicking while wearing gloves — yet another reason to cast a stink eye in the direction of this new home button.