Apologizing for your mistakes is entirely correct and is what a conscious person does when they realize they've made an error that could have potentially hurt or mislead someone. What, do you never apologize? Or do you never make any mistakes to apologize for in the first place?
What do you mean by "Grow a pair"? That real men never say sorry?
He clearly states that he knows that, so I don't think your advice is needed. Here's a direct quote from his apology:
"I had to question and transgress against classic spiritual virtues like humility, compassion, and goodness itself. This was a phase and it had its uses.