This article makes me sad.
I was a 15-year-old who lectured my parents about what was right and was convinced they knew nothing. I was slow to grow out of that kind of absolutist thinking and the conviction that I had all the answers, and for most of my 20s I alienated my parents. It was a dreadful, stupid mistake for all of us. It meant I hurt them, and I struggled more than I needed to as a young single parent when they would have helped me, and by the time I started to come round in my 30s it was too late to properly rebuild the relationships with them. They're dead now, and it's too late. The writer of that article, and the other adults who applaud teenagers' intolerance and dogmatic thinking, aren't doing them or those around them any favours at all.