If it’s consciously kneecapping the device for all manufacturers except yours, it’s not a practice beneficial to anyone but monopolies, so consumer laws should prevent it.
This repo seems to prove the case of AirPods is closer to the latter.
You might argue, well why did Apple choose to use Bluetooth at all if they’re not going to participate in the interoperability motive? Because initially (think early iPhones) Apple did not design wireless communication modules and benefits from buying COTS from existing vendors.
So would it be easier to just participate in vendor lock-in? Let me ask you, do you enjoy being able to fill up a car at any gas station, or charge your car at any 120V outlet? Standards usually benefit everyone.
It’s convenient only as long you stick to their closed ecosystem. Requiring a device to identify as an Apple device to expose all features is an anti-feature. The devices should expose all features regardless, and leave it to the device/platform vendor to implement the config software.