He does not look happy because he’s having to explain to his little girl about spreading the wealth around and why she has to give a bunch of her candy away to kids that were too lazy to go trick or treating on their own. She doesn’t look very happy either.
He’s not expecting his daughter to “spread her wealth around”. He’s keeping all his stuff. That’s why his aunt and step-brother are living in poverty. He wants US to pay for them. He wants everyone elses children to share not his - he’s special!