To summarize: there are three roles, Typist, Navigator, and Support.
The Typist is not allowed to think. They are explicitly described as a "smart input device". For the most part, only the Navigator is allowed to think. They tell the Typist exactly what to type, and the Typist must follow everything the Navigator speaks, to the letter.
The Support only looks over both their shoulders and sets a 10 minute timer after which the roles rotate. Yes, every 10 minutes everyone switches roles.
When working in person, one thing this selects for is people with perfect vision. Elderly programmers need not apply!
Why do I say that? Well, I have computer glasses that let me see my screen perfectly even at my age. This applies to anyone over 40-50: if you don't have them already, I strongly recommend getting a pair of single vision prescription lenses tuned for your normal distance from the screen. Since I use a laptop, these glasses are set for a 20" focus distance. I have two external monitors (one landscape above the laptop, the other in portrait mode to one side), and I keep those at the same 20" distance from my eyes. It is glorious! Everything is in focus, all the time.
If we're sitting around a desk, it's almost certain that I won't be able to read what's on your screen, for the simple reason that it won't be at a distance that brings it into focus (probably much too far away).
Oh, and you may like dark themes and tiny fonts like all the young people use these days. So even if it were at the right distance I wouldn't be able to read what's on the screen.
Mobbing on a Zoom call mitigates the focus distance, but the dark theme and tiny fonts would still mean I can't see your code.
And webcams are supposed to be on all the time so your fellow mobsters can see your face. A nice sentiment, but two problems:
1. I can't work sitting. If I do, I fall asleep after a while.
2. I can work standing, but not standing still! (I'm no John Carmack, who can give an hour long talk without moving a muscle.) I have to move around in order to think and stay alive. So I would constantly be walking in and out of camera range, or stretching, or wiggling around on my Fluidstance balance board, or just looking out the window for a vision break.
A more delicate problem: Sometimes older people need to take more frequent bathroom breaks, and the timing may be unpredictable, especially for someone like me who eats a lot of fiber for intestinal health. Sorry, I may not be able to just "hold it" until the next scheduled mob break. (Apologies for the TMI.)
This whole thing is an ADA compliance lawsuit just waiting to happen. (And no, I'm not going to be the test case; I have no interest in working for a company with these practices.)