But with the same "resolution" such that you can't fit any more content on it and with much worse density.
Why would I actually want that? You've been able to do this for decades by hooking a TV up to your laptop and while that certainly has space challenges that limit the number of people that'll try it, it's not like tech bloggers were flocking to hook up 65" TVs to their macs and lovingly wax poetic about the productivity gains, either.
The virtual resolution is adjustable and you can fit a lot more contents on the screen than you can with a real monitor. It basically allows one more setting past the maximum “more space” mode you normally get from macOS. It does render a little bit blurry, though, if you crank up the virtual resolution to the max.
Why would I actually want that? You've been able to do this for decades by hooking a TV up to your laptop and while that certainly has space challenges that limit the number of people that'll try it, it's not like tech bloggers were flocking to hook up 65" TVs to their macs and lovingly wax poetic about the productivity gains, either.