My suspicion is that Steam intentionally does this to ensure you’re compatible with all their old 32-bit games.

Depends on your definition. Looking back, I think we’ll see 11 as the major shift into the mainstream, but there’s no chance of it becoming a majority this generation.

They’ll never get it right. Bluetooth is fundamentally bandwidth limited, new protocols can be a little more efficient, but that doesn’t change the fact that there’s just not enough data flowing for it to sound good.