"You remind me of the people who do not give money to the homeless because they might buy alcohol from it"
Well, yes, thank you for the analogy. That is exactly what I don't do if the homeless person's actions and statements show clearly that they are in the throes of an addiction, have not acknowledged their problem, do not have or even desire a plan for recovery, and are clutching tightly to the most recent bottle of booze they've swallowed, with its last precious dregs at the bottom.
The way forward always starts with a minimal test.