They do note "Bad Actors cannot take over the system until they have played by the rules long enough to have accumulated sufficiently high reputation scores. No

They do note "Bad Actors cannot take over the system until they have played by the rules long enough to have accumulated sufficiently high reputation scores. Note they can only acquire reputation by being good Actors in the eyes of already-good Actors. " However, the "mitigation" already demonstrates a potential attack for the proposed algorithm, namely, that once a bad actor does get some reputation score capital (e.g. by investing some money/effort on genuine good content) then they get the effective ability to invest that reputation into spawning a self-reinforcing farm with a large quantity of reputation bots (using the mechanism of periodic replenishment of rating tokens) who do not need approval from any good actors if they get initially boosted/sponsored by the bad actor, and they can then indeed take over the whole system by maximizing their effect of the rating process/investment which real users simply won't do.