Q. Is this really as harmful as you think?
A. Go to your parents house, your grandparents house etc and look at their Windows PC, look at the installed software in the past year, and try to use the device. Run some antivirus scans. There’s no way this implementation doesn’t end in tears — there’s a reason there’s a trillion dollar security industry, and that most problems revolve around malware and endpoints.
Bazzite has been designed to be an out of the box SteamOS distro. It’s not based on Arch, so if that’s what you’re familiar with then that’s not the same, but give it a try.