It's much more important to just ban Bluetooth. And also wired Jabra headsets that inexplicably still sound like Bluetooth. No more tin can sound, no more dropped words when someone starts talking. Yes, even an internal mic is better in this regard, though it will have problems with echo cancellation.
In addition to audio quality, people have _constant_ problems with their audio setup across all platforms when using Bluetooth. I've gotten to the point where I will just outright buy someone a plain USB mic just so I can consistently get them on a call without 10 minutes of fumbling audio interfaces.
Unfortunately, even after buying them a USB mic + explicitly banning Bluetooth on calls I still catch devs trying to use their fancy Bluetooth gaming headset (or whatever) which can easily push meeting start times back by 5-10 minutes.
Some conference apps just suck at audio. Teams will always pick the wrong mic / headphones, even though I don't have any bluetooth headset connected. And even after I've managed to convince it to use the right one during a call, for the very next call it forgets everything.
But yeah, to your mic point, some people just don't seem to care. I have a weekly conference with someone who takes it from his open office. I can hear his colleague way better than I can hear him.
