> Better is either the button/switch to turn Bluetooth on, or do not allow disablement when either a mouse or a keyboard is connected via Bluetooth and no wired version of the same is presently installed.

I was thinking similarly, but for backwards compatibility, maybe only allow a person to disable it using a somewhat complicated combination of hotkeys. Show the warning and then after 5 seconds the hotkeys would be displayed and active. Or maybe something similar to "sticky keys" on Windows, when you hold down shift for a bit.