Yes, to me this completely verifies Frank's claims. When people leave ahead it reinforces their desire for gambling because they don't leave with "a negative aspect on every cell in their body". In fact, they feel great and probably want to come back very soon. The more this happens the more likely they are to become completely addicted.
And, of course, this emphasizes that a system like Singer's that increases daily wins while having zero impact on long term results is the worst possible system as it leads to increasing addiction.