Can't one install it without docker just by running:
        pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/w...

Agreed. DWM is a 2000 lines of elegant art for programmers. It also has exactly the behavior the questioner is asking for. One changes the workspace on each screen separately, and it is easy to move applications between screens.

Although I prefer DWM for myself, I rarely recommend it to others. Perhaps that is a bit snobbish, but I just think most people are unable to appreciate it properly.