Ask yourself, “how easy would it be to test this myself?”
Now ask yourself, “how hard would it be for someone else to prove this and give me something that convinces me?”
Even people working in academia don’t say “show me empirical evidence!” This just feels standoffish.
But I imagine the average cheap windows laptop has quite poor quality mics. It would be hard to test though as there are so many models out there.
Not to mention the quality of the parts itself is usually much lower than those in the external mics, or the MacBook ones for that matter.
There's a YouTuber called DankPods, reviewing all sorts of headphones lately, along with their mics. Can't recommend any particular video, as the microphone tests are only a tiny fraction of the content, but after watching a few tests this issue become very apparent. Easiest thing to do would be, as other commenter suggested, to test it out for yourself in the voice memo app.
Anyway I guess it depends where the macbook is positionned. I am not using a macbook but my laptop is stashed away on a shelf[1] when plugged to my usb-c docking station using external screens so using the embedded mic would be a no starter anyway.
[1] it seems to be cooling and running quieter vertically when its bottom fans aren't obstructed.
To change the input source you can go into System Settings->Sound->Input
Mac microphones are quite good, see if that's the case for you too.
Is that true, have I been doing my google meets wrong this whole time? So you’re saying if I’m on my Mac and having a google Meet, and I’m using my AirPods, then I should have my mic input as MacBook and not as AirPods? Do you have any sources or your own empirical evidence that this would provide better sound for the other party?
Even if the microphones are worse on the AirPods (I believe that), I always thought the final voice output would be much better from the AirPods since they are much closer to my mouth and move together with the movements of my head, which I imagined would help with noise reduction / voice isolation.