“first of all, if u can afford to smoke, then you can not have the chutzpah to go round collecting.”
By this logic we should not give anything to anyone without an intensive background check, because there are many beggars who wont smoke infront of you, and there are many beggars who spend money on non-vital items (i.e. chicken instead of bread, cell phone instead of bread, vacations instead of bread, car instead of bread). In fact, probably every ani spends some tzedaka money for non-vital needs. So by this logic you should basically give no one.