Downside to reading parenting books or books on mental illness is that it makes you realize your parenting skills suck. Your kids are messed up because of it and will now struggle the rest of their lives.
I can’t see the original posts by the other person, but you are 100% correct. Mistakes are valuable opportunity as you atone for them and make amends. Doing so provides hope for those who see you and heals those around you. Mistakes are not the end. Mistakes are the beginning.