re: Does intellectual frustration lead to anger? - Yes, ask any space enthusiast. :}
Of couse, that goes for any topic of interest one may have.
Anger management, of course, differs with each individual. We all handle disappointments differently, but I'm sure that there can be positive outcomes. Personally, I've found that to be the case, so, there's hope. That can be a very good thing towards progress for individuals as well as the whole.
(-boy that all sounded a bit cheesy, but there you go.)