I feel like it's time to stand out there and grab his hand, put the brush in it, and show him what painting is like. When he sees how much happier the house owner is when some painting is getting accomplished, maybe he'll paint on his own. Either way, I'm tired of talking about the painting.
No he won't HD. He isn't going to look what he considers just the top coat, he sees the wood under the paint. He is still thinking what an awfully dumb person you are because to him prep is 90% of the paint job and you don't see it.