So long as the work is rigorous there's nothing wrong with studying collective motion of moshers at heavy metal concerts.
It doesn't have to be world-changing or life-saving to be interesting (though those things certainly don't hurt... usually).
Call me when you find stadiums build on Jesse Silverbergs great principle of MASHers, that save so many lives.
To me it's a shame that this appears publicly posted on a universities site. I suppose that, for this to happen, a Professor must have agreed and supported this paper.. ugh.
P.S.: I do understand very well that simulation of crowds, especially in buildings, is very important but i feel that this is making fun of serious scientists putting real effort into such work.
After that he might think about what similarities there are between moshpits and high energy particles in a nuclear fusion kind of environment, and if that could be simulated in the same manner.
Feynman worked on the plates problem just for his own, he didn't intent to publish a paper on "how does a sign on a plate look when the plate wobbles" and certainly he didn't expect people to tell him how important his scientific research on plates could be for the world :P
In fact, it's not even a realistic simulation. I think you may agree when you have ever been at a heavy metal concert.