Husband yelling at 1 month old..?

Ok so me and my husband have a deal, I take care of baby all day while he is at work(11am-8pm) and when he is home at night he at least does 1-2 feedings/diaper changes through out the night(10pm-6am) and I’ll do the rest, well last night I was fixing baby’s bottle trying to help out and I caught my husband yelling at our baby while he was changing his diaper, he told him to shut up in a firm but slightly loud voice, so I told him that yelling in his face because he was crying is not going to fix anything and his reply was I don’t know but I don’t care, so i replied well at least he doesn’t have colic because he would cry more well his reply was well I would just kill him(Um excuse me wtf?!!)well that pissed me off/set off a red flag majorly so I’ve been wanting to have a long talk with him, I didn’t sleep well the rest of the night because I was just about to tell him that we need a divorce and it was mistake having a child(not saving I don’t live my son, I do but I don’t want him to be hurt by my husband)with you because if you can’t handle 1-2 diaper changes/feeding while I have to deal with him all day long then something is wrong.

He has yelled at him before but not really telling him to shut up it was more of him just making a crying noise very loudly trying to make baby be quiet.

I’m wondering if I should just have him not help with baby anymore since he can’t handle it or his crying.. I can’t have my MIL help because she is crazy as hell and can’t be trusted and my parents live 9 hours away so they can’t help either.