Have you tried it and did it work out?
By trying I mean doing it on production code for more than one day.
The benefits that people are claiming I find are true, so far. It’s different, but it has almost eliminated all lead and wait time for us which I consider to be a huge obstacle for effectiveness.
I got convinced by The book The Art of Agile Development (https://programmingbooks.dev/#the-art-of-agile-development) where he describes mob programming as an easy mode for collaboration.
We used the book Code with the Wisdom of the Crowd (https://programmingbooks.dev/more/#code-with-the-wisdom-of-t...) as a guide to learn of to do mob programming.
In a recent "agile" project we formed a group of 5 people, 3 of which took on the software dev task and the result was fantastic.
Either way, it's just a job and as long as you're behaving lawfully, there are no real consequences for you if you make poor decisions as a group. The project may or may not succeed, but at least you had fun, right?
Some people thrive, some people tolerate it, and some people consider it hell.