Earlier quoted context omitted.
Secure bluetooth requires manufacturers to get the cryptography right. Even big brands like Logitech have gotten that wrong in recent memory, allowing attackers both to decrypt what you type [1] and to inject keystrokes [2]. And these are long-lived devices, even if vulnerabilities get patched in newer devices there are still plenty of 5 year old or older mice and keyboards with outdated firmware floating around. Not…
Same with keyboards and mouses which use insecure usb radio receivers. This company policy doesn't really prevent that. The best way to correctly fight Shadow IT is to provide equipment and services so good nobody would even care using something else.
Some people will always want to bring their own equipment, but a lot of it is caused by penny pinching or lack of options