In my case, the audio devices menu on Mac/iOS displays nearby AirPlay targets, including those not on the LAN. My neighbors got their misconfigured so it always pollutes my menus with no way to disable this even though I never use AirPlay and don't have any compatible hardware (nor intend to get any). Every time there's a risk of misclicking and accidentally broadcasting a meeting's audio or (if they have auth enabled) annoying the neighbor by waking up their Apple TV (or taking over whatever they've been watching), and yet I have to faff around with that menu constantly because of the next point:
The AirPods auto-switching/roaming introduced in Big Sur made mine completely unusable due to some edge-case bug (even disabling the auto-switching doesn't make them as reliable as they used to be back when they were released, and it takes me 30 seconds of connecting/disconnecting/switching between audio sources upon joining a meeting to actually get it working) forcing me to buy a USB headset. My AirPods are still OK for music on iPhone but became completely useless for meetings even though I bought a second pair just for that reason. - I just can't afford to waste 30 seconds of every meeting gesturing like an idiot while screwing with my audio settings just to get people to finally hear me.
The new "hide my email" feature in Safari now pollutes every email form field with a dropdown that I'll never use, and yet again no way to disable this.