I don't see a problem with him having (in my opinion) poorly thought out opinions. This is why we let teenagers post stuff on the internet but don't let teenagers vote. System is working as intended. Nothing to see here.
I not only have no problem with their opinions, I wholeheartedly encourage them. It's by expressing them that the poster gets to read contrasting (and complementary) opinions and consider another point of view - and what better way to form a balanced view of a subject?