This, in essence, came up in the comments a few days ago. The artist twists facts to achieve their desired goal. A six year-old does not have the right to keep and bear arms, enter into legally binding contracts, marry, or associate with whoever they want. Even fundamental human rights about which there is essentially no controversy such as access to sexually explicit material is prohibited to children.
Misrepresentation of facts can be a sign of immaturity, laziness, stupidity, evil intent, or bigotry. I wonder which it is in this case (in the case of the comments to my previous post I attribute it to an attempt at humor which I dismiss as extremely unlikely in this case).