Just to balance the anecdotes, I've had both input and output from a Bluetooth headset work in Windows XP, Vista, 7, 8, and 10, OSX Mountain Lion through macOS Mojave, and various Linux distros.
Yes, but the very fact that this needs to be said proves how bad BT is, really. In what other connection type would it ever be stated that somebody actually managed to get it working all the way?
