The obvious potential harm in general outweighs the positive outcome in a specific case. Justifying broad surveillance because it works occasionally is the road to a police state.
I use discord to do a few text channels and chat with friends. Every nitro popup gets dismissed because I don't know what it is and have no interest in spending time figuring out some new thing I probably don't need.
It shows that giving people $50 is not nearly as effective as giving them more, so the program should shoot for a reasonable floor on the amount per month.