I think your anxiety about this big life event is getting expressed in these concrete things like bottles. Its a kind of nesting instinct, I guess.
One of the really difficult things about having a baby is that the man and the woman suddenly become aware of their differences in experience and they are often NOT on the same page. Your DH's experience of this baby is very DIFFERENT to yours. He isn't carrying it, he won't be BFing it, he won't be giving birth, with all the anxieties and fears these bring. On the other hand, he has to watch his precious baby being carried and birthed and fed by someone else, without any chance to do it himself - which is a whole OTHER set of anxieties.
Whenever there is difference is leads to anxiety and anger and disappointment, you want your DH to be where you are, but he isn't. That's OK. It doesnt mean he is NOWHERE, it just means he isn't precisely where you are. Can you talk to him about where you are, and be curious about where HE is? He probably has a whole load of fears and anxieties of his own e.g. about losing you or the baby, maybe that you or the baby will die or that he will lose your love to the baby and become irrelevant. He might be very worried about whether he can be a good father and provider for his baby - and the whole thing might feel surreal to him especially since he is not the one who can feel the baby inside.
He might be feeling equally upset that you don't understand where he is at.
FWIW I didn't have a nursery, a cot, nor bottles with mine when she was first born.
I had a car seat, a pram, a moses basket, I had some vests, some sleepsuits, a hat, some cardis, and a sleeping bag thing, I had nappies and wipes and I had muslins. I don't think you really need much more than that TBH. And if you do need something, the shops are almost permanently open and Amazon does next day delivery.
I think when you call your DH a "cunt" for not having organised a car seat what you really mean is you are furious with him for not understanding how anxious you are.
The calling him a cunt and making him sleep in the car has got to stop, too. As well you know. That is no way to treat your partner, and the father of your baby. How on earth can you two work together in this very challenging period if you are speaking to him like that. Don't ever call him a vulgar name again. Don't ever again allow your partner and father of your child to spend the night in a car because you can't control your rages.