The conversation was had prior to the season. No offense taken from prior comments. In an ideal world, my son would have told him no but it's not about him speaking up for himself. Like many competitive kids, he won't admit he's too tired or doesn't have it. The coach should not rely on the kid to be honest about that. Major league and college coaches don't leave it up to the pitcher in most cases.
The yelling occurred because he was trying to force a bad decision and rationalize it. I was less upset about the exchange last night. My son agreed when he got home that he should have come out when he did. He had no idea he threw many pitches. I'm more concerned that he will disregard counts when I'm not there.