I am sure if someone said they went to someone and something good happend the Mods would let it go through
But would the mods let go through someone who claimed to be a miracle maker and someone had gone to that person with the Kvitel and then nothing happend except the persons wallet was lighter?
if it is said as a warning to others without being a slander against the concept of going for brachos/advice from Rabbeim, there is a good chance it would go through