If we go back to the topic, I would say that the captains reaction triggered the Fo's reaction. This was a case of normative decision making so there was some time to discuss. The Captain could have said ; " what do you suggest about the weather ahead?' Even if he had his own plans in his head. Maybe the FO didn't see it, maybe he had other plans but now he can talk. The Captain could have suggested to divert early around the tunderstorms instead of jumping on the radios. It would still have given the FO the feeling that he was part of the team and part of the decision making process.
The FO's reaction was hostile against the Captain and not acceptable but sometimes better communication skills can do a lot to improve situation awareness and decision making.
The aircraft manufacturers have stated that their jets have to be flown by two pilots, that means the input of these pilots are important. The Captain has the ultimate decision but is it so difficult just to consult the person sitting next to him/her when time permits?
Why would you fly around on your own when you have just p****off the person next to you and in this case they did it both.
I'm not talking about trainees or 200 hour pilots, just fully qualified crews working hard to keep their flight safe.