In the bluetooth spec? For various non-computer things, like being able to pair your first controller to your playstation, without having to plug in an usb mouse to click ”allow pairing”
There are set-top boxes/TVs running android/linux that might have the same use-case for remotes/controllers and macOS/iOS share a lot of code with tvOS which has the same use-case. Macs ship with wireless keyboards that automatically pairs, apple even highlight this on their product page: "It pairs automatically with your Mac, so you can get to work right away." https://www.apple.com/shop/product/MMMR3LL/A/magic-keyboard-...
On the devices affected? Who knows