It’s not an issue of ‘power’. His iMax Pro has plenty of power to edit multiple streams of music. The issue is having a compatible monitor (to include a built in camera). I suspect a smaller M1 iMac would work as well but with a lot less viewing ‘real estate’.

Ok, but I know a music producer that, on visits, drags his iMac Pro to and from his parents home in Maryland.

This looks like the view from Brazil at the falls across the river in Argentina. Just like the best view of Niagara Falls is from Canada.