One is direct, and the other is not. And you’re right, one is not constructive, and the other is, that’s not coincidence.

What ‘immediate’ even means in this context I don’t know.

Yes, being indirect. Instead of saying: ‘you did a bad job’, say ‘here are things you can improve for next time’.

On is confrontational and problematic, the other diplomatic and constructive.

Everything the author describes can still be accomplished by being diplomatic and understanding without being confrontational and direct. Plus, you build a better, more resilient team that way.

I’m not really sure the author learnt what he thought he learnt.

That’s just straight ridiculous. But who tf does doordash deliveries if you’re strapped for cash!?