If I read this right :

step 1 : create an actor ; let's say ACTOR1

step 2 : create multiple actors (bots etc) let's say ACTOR[A-Z] to raise the reputation of ACTOR1

step 3 : use all the Rating Token Balance (R) of ACTOR[A-Z] to give reputation (S) to ACTOR1

step4 : ACTOR1 now have a good reputation on the blockchain

step5 : ???

step6 : back to nickserv on irc with known nicknames to find someone with good reputation

EDIT : I missed the "Note they can only acquire reputation by being good Actors in the eyes of already-good Actors" but I am curious to see how this could not be rigged by a algorithm