My current pair are about 6 years old, working fine still, thankfully... But in a recent visit to audiologist, they had me test out a newer pair... but they had a single button instead of rocker + button, and bluetooth/app was touted.
I dread the touchscreen phase of HA as a young person with functional fingers (vs elders with dexterity issues) and a preference for physical buttons (a la my 2009 car).
The idea of autoswitching the programs outside limited cases (direct audio input cables and increasingly-rare telecoil situations are the only things I would accept) also doesn't sound great! :)