Yeah but many devices still do not support it, and if they support it, then badly, or they hide it. There is not even a USB-Bluetooth adapter that would enable

Yeah but many devices still do not support it, and if they support it, then badly, or they hide it. There is not even a USB-Bluetooth adapter that would enable LE Audio on Linux. (Besides the hacky ones that contain a full Bluetooth stack and present as USB-Audio, but those come with their own problems.)