Good point, updating to Android 11 took my Bluetooth connection from "spotty at best" to "nearly too aggressive". If you have multi-point Bluetooth accessories, Android 11+ devices will almost always try to steal your connection if Bluetooth is enabled. I can't tell if it's a feature or an issue, but it's certainly better than the way it used to be.
There are a bunch of options in the dev options including what enabling the Gabeldorsche stack.