Yes, he had courage. But it would have been better if he'd gotten the other eleven jurors on his side. Because he failed to do that, the trial ended in a mistrial when it could have ended with a guilty verdict.
It's not just bad parenting that causes.this. There are many elements of the larger world telling you that having patience and taking responsiblity are liabilities instead of assets. If you work to earn people's respect rather than demanding respect, you're a wimp. If you spend a lot of time on something that everyone else spends very little time on, you're wasting time even if you're doing something worthwhile. If you always give 100% of your skills/abilities to other people, you're enabling them to "use you and abuse you". If you obey the law and respect your elders, you're no longer a human being but a pet, a puppet, or a pawn.