I've heard of noone so far getting banned for playing in a VM. The anticheats can install their kernel modules as they want, and the lookingglass capture is using the direct X capture API, so nothing weird there. A SHMEM device is nothing out of the ordinary either.

I mean sure they could detect that you're running in a VM, but I'm yet to hear about any cheats where you edit the memory of a VM, so until that's a thing i safe.

There are companies like shadow.tech that builds their entire business around this implementation, so one can only hope it stays this way.

Personal experience: Playing both Overwatch and Counter Strike without any issue (VAC enabled servers)