The super spreading (and k) at first seemed an academic curiosity. But I guess the practical use is that if we can track down fast super spreaders and isolate them, the population in general are 'ok'. Problem being is if a super spreader passes to a superspreader, we have to trace effectively too.
I'm not sure if superspreading has to do with the kind of people, so that you can identify and isolate them. I think superspreading happens if an infected person, at the right stage of infection, takes part in a certain activity. The same person a few days earlier or later wouldn't be a superspreader, or if they had done a different activity at that time.
I think it might have to do with where the viral load is highest within the breathing system, and how you breath. It seems like a lot of superspreading incidents happened in situations where there were a lot of people indoors, singing or speaking loudly. Like the clubs in Korea or in the ski centres in Austria, or the choir infections here and in the US, and maybe even the funeral incidents. I could see how you would spread more virus material from deep inside your lungs if you were trying to make your voice loud, with air pressure from the bottom of you lungs and your mouth open. And how other people would breath it in, if they were also trying to sing loudly or similar.
