What do you even do with independent virtual desktops per monitor?

I’ve got 8 virtual desktops and 6 monitors, but I want the content of all 6 monitors to change when I switch virtual desktops. Having to do each monitor independently sounds like a huge pain.

(And, of course, there are a couple things I want on every virtual desktop. But it’s easy to set certain windows to be on all desktops.)