In the other thread on this I said I hadn’t really tried this on my Mac and was going to do so. I have now been using it several days and will definitely carry on using it.
I have seen it said that it doesn’t work well on small screens and I am using a 13” M2 MBA. I really like that if I have multiple windows open and piled on top of each other (as they have to be on a small screen) Stage manager moves them to the side icons where they are easily accessible.
This is a problem when I actually want more than one window open to make a composite screenshot, so I have to turn off SM to do this but most of the time it is on.