NTA. Someone important to you died and being able to remember and honour them is such an important thing. The fact that your husband cares more about his ego than the fact that someone you loved literally died says so much more about him that it does about you. The fact that he threw a tantrum and stormed out like an angry toddler does not help his image. He's a grown-ass man. He needs to act like it and discuss things that bother him like a normal human being.

Sorry for being harsh but he should support you on such a difficult day, that's literally in the job description of beings someones partner and I doubt he'd respond well if situations were reversed and you did this to him.