That is absolutely a flaw, but I don't think it kills the analogy. If you look at other attempts at building some kind of social credits system, e.g. karma or p

That is absolutely a flaw, but I don't think it kills the analogy. If you look at other attempts at building some kind of social credits system, e.g. karma or points on sites like Reddit, you'll notice that people often benefit from a similar kind of feedback loop and get outsize rewards. The point is that rather than trying to follow NIH syndrome and building a new system from scratch, repeating all the same mistakes, perhaps one could try to fix the existing system? Otherwise, the parallel social credits system will most likely either remain a parallel system with social stigma attached to it, or it will end up having the same problems as the already existing social credits system (i.e. money).