It should be assumed that all of the ‘rewards’ are going to be cashed out - whether it is from “whales” rewarding themselves, or minnows collecting their rewards. From an investment/price perspective, the main item of concern is that the demand is keeping up with the supply from the newly created tokens (inflation). If you compute the amount of daily rewards that are generated, and compare this with the daily volume of the tokens traded - you will see whether it should be of concern.

There are users abusing the rewards pool. Sure. That has been happening since the very beginning in various forms and will probably always continue. If you can’t see the value in the platform despite that issue, then I am not going to try and convince you..