So, just to be clear, it sounds you're arguing that we should put barriers on how good people who are homeless/broke should be able to spend their financial ass

So, just to be clear, it sounds you're arguing that we should put barriers on how good people who are homeless/broke should be able to spend their financial assistance - in order to prevent addicts from buying drugs. That sounds like conflating the issue of poverty with the issue of drug abuse. There is overlap, but I don't believe that the harm to addicts outweighs the help to the people struggling to survive.