Yep. It sounds like a weird hypothetical by a pro-gun activist, and it would be largely ineffective, but the dude seems utterly sincere. It’s not hard to just file something to a point if you’re serious (it happens in literal prison), so at best it make a small number of crimes of passion less serious.
Banning a useful but abuse-prone technology is always going to create both inconvenience for legitimate users and some level of prevention of bad uses. What the right balance is is a tough, complex question and probably very dependent on when and where you ask it, but unfortunately it often gets boiled down “but the children” or “but freedom”.