I'm not suggesting that, I'm just explaining why these bugs happen despite all the testing that goes into it, on top of everyone at Apple living on Apple devices by default. I don't really have a solution, I work in the browser, not the part of the OS that handles HID &c. What I do wouldn't work for you: I do just reformat my device quite often, but that's because I work with new hardware / custom OS builds & thus often get in a borked state that would never show up on a customer's device -- and it's only possible because I have access to internal development tools and all that.
Is the particular problem what you were saying about headphones not connecting to multiple devices at once? If so, I admit that's a different kind of issue -- rather than the lack of functionality slipping through testing, it was probably just never included as part of the PoR in the first place. I.e. at some point the designers, or the engineers, or whomever, decided that it wasn't worth building. Despite the level of integration that is indeed possible, you still have to make tradeoffs -- security, performance, timelines, etc.
Is the particular problem what you were saying about headphones not connecting to multiple devices at once? If so, I admit that's a different kind of issue -- rather than the lack of functionality slipping through testing, it was probably just never included as part of the PoR in the first place. I.e. at some point the designers, or the engineers, or whomever, decided that it wasn't worth building. Despite the level of integration that is indeed possible, you still have to make tradeoffs -- security, performance, timelines, etc.