If they are in prison then they cannot bring in more blueberry pop tarts.
This sounds like the snark of someone whose faulty logic has been pushed into a corner.
When I was 5, we had a coon in the barn and my uncle killed it with a .22. There was a good lesson from my father on firearms, death, and what death meant. Even at that age, I was able to clearly understand the difference between the .22 that shot that coon and the cap guns that me and my friends played with.
Cap guns, stick guns, and gun-shaped pop tarts are not the reason we have young adults committing mass shootings. Moreover, kids are not complete idiots that need to be isolated behind extreme, inflexible and unrealistic rules until they turn 18 and magically become adults. In fact, turning 18 or any other age will not magically make them well-adjusted adults. Rather, kids need to experience and be educated to gain understanding and experience over time. It is the fact that many of our youth are completely isolated from firearms and their implementation in hunting that, in my opinion, is partly responsible for young adults not having a realistic grasp of and respect for firearms.
Some absurd aversion to pop tart and stick guns is not going to do one iota towards solving the problem.