This is the kind of captain all cabin crews dread!! There are two or three in my company and the last time I had the pleasure (not) of flying with one of these individuals I was so stressed I had to get a CRM trainer on the phone at midnight in the middle of our trip for some psychological help and advice on how to handle the situation the following day!!!!
Please, on behalf of all my colleagues, do something about it. If you're sure his behaviour is a serious safety issue (as it looks like) please do report it. Captains are entirely responsible for the safety of plane, pax and whole crew and are paid accordingly. I am sure there would be a better, more enthusiastic and responsible person to take his place.
Cheers
FBW