you are right, on my linux pc I also use xone instead of bluetooth
on the Steam Deck I just use another non-Xbox gamepad instead

afaik xone (the kernel driver for the Xbox One dongle) still isn’t part of the linux kernel (neither mainline or steam deck kernel)
the gamepad itself works fine though, only the adapter dongle sucks

since you can also connect the newer Xbox gamepads via bluetooth, it seems like not many people actually care about it