I am so sorry that your family is going through this. Mostly I am sad that you don't think he is getting the best of care. All older folks deserve that as someday we will be in the same situation, including those that care for him.
My mother experienced the same type of confusion. I do think it was do to the cocktail of medications she received. Once she was in her own home, with some home help nurses, she regained some of her ability back. I hope that there is a recovery. No one here would ever say anything to hurt. Believe me, we all go through some family member being sick in their senior years. Love conquers all. Go give him a huge hug, talk to him. Bring in photos and music to jar the memory. Anything he likes, try to show him. Music is used in therapy in nursing homes, that are in tune to the older person. My son is involved with this and said it really helps. Let me know if you try this. I believe it will help. ginnie