Young people have a tendency to think they know better. Sometimes they have an advantage, but more times than not they have no clue what they are talking about.
It doesn’t matter who’s right, what matters is your results. So while you’re finding your way in a new field, shut up and follow the leader. Who’s the leader? Anyone that is doing better than you and is taking the time to teach you.
When you do better than him he will listen to you.