You're also ignoring the fact that someone who is eligible for this kind of social security and spends it all on booze is probably unwell and needs treatment for addiction and the conditions that cause it. In many cases, the cause of addiction is poverty itself.
This fear of being "scammed" by the Joes and Steves of the world is completely irrational. The government is taking a big chunk of your money anyways. What's being proposed is that instead of spending tax dollars on killing poor people abroad, you spend it on helping poor people at home, regardless of their work ethic.