Ending compulsory schooling? Good luck with that! Surely nothing could go wrong with that!
Demands to end compulsory schooling is actually one of many random demands due to people not being sure how to fix the problem. If you feel the approach is incorrect, then you should suggest a better demand (such as exempting a small portion from compulsory education).
For the same reason we don't let children take any important decision for themselves before they're 18... They lack critical thinking skills, foresight and maturity to make them.
They are still more than capable of telling if something is completely dysfunctional. Yet, they're completely unable to fix it because "they lack critical thinking skills, foresight and maturity to make important decisions" and therefore shouldn't be allowed to do so.
Got a student taking basic math despite having already mastered it? Nope, got to finish basic math first.
do things to satisfy their immediate gratification, which would probably mean playing a glorious amount of video games.
Technically, those teenagers are better off. Immediate gratification is better than short-term pain that should have led to long-term fulfillment but actually didn't.