My opinion, based on my experience, is that blowing your top with blow up in your face eventually.
Your anecdotal experience doth not a trend make. My anecdotal experience with jagermeister is that whenever I drink it, I hurl uncontrollably. So nobody should drink jager because it'll make you hurl.
Doesn't work that way.
I don't know what you're doing here but I'm hanging out giving my opinion which (based on anecdotal evidence), which I think is what most people are doing. I cannot give you a research paper with citations at this point. I can see I've struck a nerve with a few people, and, obviously some didn't read all my posts (which I wouldn't expect them to do). To sum up my OPINION:
Calm assertive leadership is the ideal because that is how good decisions are made in the heat of battle. No doubt sometimes a calm assertive leader will lose his temper, that's part of the deal. Problems with motivation and poor performance can be dealt with by "fear" or "anger" after action but it is of little use in the heat of battle because the troops/player are scared, tired, frustrated, or whatever. What they need are clear instructions on how to proceed. If they are not motivated at that point, the leader failed to prepare them correctly. It sounds like some of you have had a good experience with a coach with a short fuse, that's fine I'm not doubting you. In my experience, calm assertive leadership has been much more successful in my life in high pressure situations (football, the USMC, kickboxing, work). Good luck to all.