I do, and I think you don't get what I wrote. Full screen, the way I have my account set up, is for the active window in that app - in a new Space for that window. I have 4 Spaces in this account - activate FS for an active window gets a 5th Space, activate FS for another active window in another app gets a 6th Space. Swiping to a Space with no active windows yields a Desktop view - in which I can drag any file to the Dock to open. I do this all the time, in a multiple-monitor or single-monitor environment.
Get it? 🙄