Maybe the analogy here is you can buy only one kind of gun. That gun can load any ammunition. It’s easy for children to get their hands on anything from bb’s to BMG50. The gun has parental controls to allow selecting which ammunition the gun will accept. It’s up to the parents to decipher the difference between all the types, and the out-of-box default is all types are allowed.

Some commenters admonish parents for trying to use these parental controls at all. “Just be good parents and instruct your 6 year old not to use hollow point, 7.62mm, or fmj”