It does seem odd to have what is pretty much a laptop and then plug your phone into it. Granted I have wanted this feature for a while/what I messed around with when I had my PinePhone Pro eg. running VS Code on it and I can't remember if I got a VM running on it or not. I've done it with an old 4GB ram Chromebook using GalliumOS.
I will say I probably didn't get a VM running on the PPP.