All we can do here is assume. Yall are assuming that he is just a smoker or just sells weed. He may be just a smoker but he may be selling harder drugs. We don't and can't know here. Passing the info to the police is easy, won't lead the neighbor to who turned him in, and much safer. I could figure out in a few days if the location was selling something and once that ball is rolling its easy to build a case without using the original source. I speak from experience dealing with this exact situation. We, the police, do not care what kind of drugs we go after.