I have a surface pro 6, bought used for cheap. With the surface Linux kernel, almost everything works.
I built support for the front and rear cameras using the surface Linux instructions and they work, however it’s not a working solution, since ms Teams pwa or discord can’t use libcamera devices.
One thing you should be aware of, though, is that the tablet experience is only really workable in Wayland, so you’ll have to forgo non-wayland apps and desktop environments. Gnome is… not great.
Also, there are several gotchas with wayland. I use flameshot for screenshots, which is broken on Wayland with scaling. Scaling also breaks default firefox on Wayland.
Sorry, didn’t mean to turn this into a Wayland comment.
The hard work the folks at surface Linux have done is amazing, and I’m happy to daily drive my surface.