Yeah, I generally agree with you. Mostly just exploring thoughts here, the gp comment prompted a kinda unexpected re-examining of my hitherto un-examined ideas on the ethical basis of the advice in the post. I'd generally consider myself something of a utilitarian/consequentialist, and would normally accept the premise that apologizing in front of the Twitter mob would at best do nothing positive, but for whatever reason my brain wants me to say "apologizing is right, and consequences be damned"

I think you should also examine the possibility that gp is straightforwardly wrong, and that a good apology can make things better, even (or especially) in the face of being called out on Twitter. Consider how Dan Harmon reacted to Megan Ganz calling him out on Twitter: https://www.vox.com/culture/2018/1/11/16879702/dan-harmon-ap...

Doubtless many people have made things worse with "non-apology apologies" [1]. But your brain wants to say "apologizing is right" because when done right, it is right.

To me, truth and reconciliation are self-evidently how we build a better world, and refusal to take responsibility for mistakes is self-evidently corrosive to the individual and to society.

[1]: https://en.wikipedia.org/wiki/Non-apology_apology

Might I suggest some research into Kant's categorical imperative, some time listening to your brain, and possibly the history of Joseph McCarthy?