Bug, I believe that you can understand how teenagers think with one child, or with a dozen. You can understand how teenagers think without actually being a parent of one, as a matter of fact. You can also NOT understand how teenagers think with one child, or with a dozen, or with none.

It has nothing to do with how many teens you've raised.

As to my insight, I've offered my opinion just like everyone else. If you disagree with it, say so. If you have some life experiences that show how publicly humiliating your children has worked out for you and them, great - share it. We can all learn something from someone else.