They are. But that poster thinks they're everyone.
I'm expecting his response to be that a law like that infringes on the right of a six-year-old to keep and bear arms.
Legal "reasoning" like yours is paternalistic at best, treating us all like children. Or tyrannical at worst, thinking we are all wards of the State.
Sorry... we gave up on that kind of illogic about the same time we gave up the Monarchy...