Ya, so I guess moreso it isn't too bad a play by him if he could see your hole cards, assuming he has a nutty hand which I still think he almost always does. His overall EV is smaller overall by a lot as you said, but that may look okay to him since he could be semi tilted and is thinking he wants his BI back.

I feel like this is more of a snap call if you got check/raised here because he has more incentive to monkey. An open shove from a maybe wreckless but seemingly competent player here is just angry with the nuts..