I'm conflicted.
I feel that the assessment you made is accurate.
But, Context matters. and in this case he made this comment that shows him being annoyed as a dad after going on the record about how useless people without kids are and calling childless women crazy cat ladies.
It just reeks to me of him being jealous of people who don't have kids and/or him regretting being a parent?
Idk. I'm not sold on my take. I guess good for him for being in the kids life in a significant way, but again I don't like the framing of his anti family stances with complaining about being a parent. Pick a side lol