You’re right Apple has a playbook of changing port types every few years, but there are adaptors available. The devices themselves still work, just that Apple knows they can use this one trick to encourage some customers to upgrade.

With wireless devices, protocol changes would brick the device, so they’d be less likely to do it so quickly. As far as I know, Apple haven’t announced any plans to deprecate the original Airpods, which came out 8 years ago and use some custom protocols alongside vanilla Bluetooth.

Maybe in the future they’ll start deprecating parts of the protocol (“in order to save your phone’s battery life” or something), but I don’t believe they have so far.