That approach uses virtual machines. While that is possible (otherwise we wouldn’t see it), it is probably not really optimized for gaming.
Whether or not it’s optimized for gaming is up to Google. The technology to bring Frame’s ARM Steam client onto Android exists.
soulsource@discuss.tchncs.de 5 hours ago
There was also an option to just install a Debian chroot on Android, with no virtualization in-between.
The app was called Lil’Debi, but isn’t maintained any more since 2018.