BT device makers are also coming in a slightly less explored field and have to make UX decisions that might not have clear answers yet.

For instance some BT headset have only a few buttons, and the play/pause button does also redial the last connected phone number depending on the phone’s state. I’m sure someone thought this feature made a ton of sense and really helps them in their day to day life, while I hate with the heat of a thousand suns.

I’d expect it takes us a few more years to come to a consensus on how to cleanly solve this kind of diverging views.