I never suggested you did say anything about small chi9ld.
But using the phrase "a properly constructed gate would not be destroyed by a child riding his bike into it" there implied something small, while a 16-17 year old is most likely adult sized.
No, my phase implied only that a properly constructed gate would not be destroyed by a child, because the OP was complaining about the actions of a child.
Any reference to size implied or not is a complete figment of your imagination to try to twist my post into saying something it didn't.
Even after I have pointed out the fact that the person was described as a child because they are a child, you still keep on trying to invent a reference to size that does not exist in my post.
A 16 or 17 year old is legally a child.
Which he has said several times, is what he will now be doing.
Though I disagree that it really "solves" the problem, because it adds the time taken to unlock and lock every time he wants to use the gate himself.