You need to get comfortable with people being upset with you. The majority of people who come to this website tend to be more passive people. We are generally poor at people being upset with us.
You need to reframe it. Maybe he got upset because he realized you’re right? Maybe he got upset because he had a bad day?
HOW HE REACTS IS HIS RESPONSIBILITY, not yours.
Perhaps if he’d had a few more home truths like that during the marriage, he wouldn’t have got to the point where he blamed you for everything and decided to leave?
Honestly, don’t worry about it a second longer! He’s probably forgotten about it already, you should too.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712