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.
I remember reading an article a few years back about physics undergraduates who didnt know how to use a computers file system. They could learn, but these are smart likely at least fairly tech inclined kids and they didnt know how to navigate folders on a computer at 18.