Pot will grow in any wet ditch, and we still stop a lot of people from doing it.

You’re not listening. We’re right back at the start: you’re arguing something can, theoretically, sometimes happen, so there’s NO DIFFERENCE WHATSOEVER versus making it trivial. Nevermind the countries where violent gangs having a gun is noteworthy, versus the ridiculous abundance in the US making law enforcement assume every rando might be packing. Nevermind that simple registration and licensing would let us disarm “real criminals” of their illicit firearms, whenever the fuck we discover possession, instead of having to wait until they use them on someone. You want to hand-wave thousands of dollars in industrial equipment, to say wildly different circumstances must stay exactly how things work now, because you think crime is magic and change is impossible.

Making something harder makes it happen less.

It’s not fucking complicated.

If your only metric is “never,” no shit you’ll fail. Thankfully that would be stupid. Less is enough.