What the heck are you two talking about? You're making it out as if the two top-level comments are just that OP didn't apologize enough. In reality they're responding specifically to the OP's individual claims and pointing out they're not accurate.
You think that "Our projects were moved to GitHub Enterprise to consolidate billing but we never had a bill in the first place." and "You're telling us we don't have copyright over our projects but the contract we signed doesn't say that." is "an accusation of insufficient prostration" ?
You might want to consider that the forced pull request has still not been reverted by this person. So an apology but no intention to undo a mistake? Does not sound very genuine in any way.
Also, an apology about a PR isn't this long. This is a wall of text with a few meek words inbetween.
The forced PR was reverted shortly after by another maintainer.
And I agree, a “sorry my bad” type of comment would have looked nice in the PR, but the attitude and actions in it vs the official apology, sounds like completely different people.
I agree that internet culture seems antithetical to forgiveness, and have no idea what can be done about it.