He looks like a young kid, probably still in high school. So Im betting he hasnt had very much on your own experiences to learn from. As he get's older I hope he takes the lesson's learned from this site, other sites, other fisher people and the lessons learned the hard way and grows from them to become a better fishermen.
The point im trying to make is monkey see monkey do. All the snaggers and flossers, the poor handling of fish, All the things we look down upon today comes from learning by example. Young kids see other people doing it and emulate.
So hopefully he takes better care in the future. And trust me kid, there are many ways to help land and handle native fish. It takes practice to get good at.
p.s. If by chance you get another video/picture of you not handling fish in the best mannor, My advice would be not to show it. I know you want to show off every fish you catch but as you grow up you'll see its more about being with the fish then the numbers of fish you bring home.