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.
Magneto wanted supremacy, not equality, and was willing to use genocide of non-mutants to get it. And Lex Luthor was a narcissist who was jealous of Superman’s power and popularity; he wasn’t acting for the benefit of humanity, he was acting in his own interests.
Every good villain has mostly justifiable motivations, they just take it too far. Magneto would be justified if he sought equality, and Luthor would be justified if he developed but didn’t use the weapon until Superman did something evil.
The only justifiable amount of force is just enough to neutralize an active threat, and no more.