No, they didn't just call someone baldy - did you actually read the passage in the Bible or are you using a comic strip as your source material?

There were mocking a prophet of G_d and that act carries with it a very huge cost. If you'd care to actually read the passage they were challenging his authority - kids old enough to challenge authority are old enough to suffer the consequences of that challenge.

What happens when a child challenges the law of gravity by walking off a cliff?
What happens when a child challenges the authority of his parent and plays out in the street?
What happens when a child challenges the authority of the law and does Cocaine?

In those three examples do the consequences adjust themselves to the age of the child?

As it turns out, in the REAL WORLD - that place were your body is but your mind isn't - in the REAL WORLD when a child challenges authority that child often dies. As it turns out, a trampoline doesn't appear at the bottom of a cliff, a car doesn't turn to foam rubber, and Cocaine doesn't turn to powdered sugar just because the child is less than 18 years old.

You accept the rules of the natural world as operating the same regardless of age but you refuse to grant G_d the same power you'd give Cocaine. Sorry, patty, but the Bible is about revealing G_d the way He is, and as it turns out He is very dangerous.