I've had issues with Bluetooth on Windows 11, but it worked perfectly on Linux Mint. On Windows 11 the Bluetooth card would simply disappear after I put the laptop to sleep, only appearing at random after multiple restarts. It did work in Windows 10 just fine, however. Similarly, I had to change my WiFi card just for Windows 11. It kept disconnecting from network. Again, something that did not affect Windows 10 or Linux Mint.
If I didn't have unused WiFi card laying around, I definitely wouldn't be buying another one just for Windows.