I was surprised by this point - I have the same keyboard as the author but when I'm on video calls I tend to use the keyboard on my MacBook because I've gotten numerous comments about how loud my keyboard is.
I use the MacBook built in speaker (not a detached microphone like he does in the video). My keyboard is on a wooden desk directly in front of the the laptop (with an open screen for even worse acoustics). Maybe I'd have better luck with a raised microphone like in the video in the article, but I would not say this is a particularly quiet keyboard.
https://www.feynmanlectures.caltech.edu/II_09.html