I agree. This is not advice for enemies.
Discussion
In a relationship though, going on assuming you’re always right and never wrong is probably on the opposite spectrum of this.
Assuming you’re always right is not the same as always apologizing when you haven’t done anything wrong.
Why assume you haven’t done anything wrong?
Who said you have to assume you’ve done nothing wrong? I’m just saying not to apologize until you’ve become aware that you’ve done something wrong.
When you say “sorry you’re having a bad day.” Is that admission of guilt?