You described quite nicely how someone in a particular situation has no power in or control over their life, and then defended someone who would choose that existence. It's not simply a matter of waste, it's an abdication of personal agency to sit around drinking all day.
What does it mean to "choose" an existence?
None of us chooses our existence, we react to the existence we're given. If someone's response to the existence they're given is to want to blot it out with alcohol and if they claim that makes them happy, then I would question whether that person is sincere or whether they are rationalizing what is ultimately addiction and lack of control, but at the end of the day it is their choice. You cannot coerce someone into receiving help.
I was put into the position of caring for an abusive, violent alcoholic for a time. It was, undeniably, the worst period of my life, and I don't think anyone who hasn't been close to addiction ever really understands what it is or what it does to people. But what I really mean is that I have watched this situation play out. I have watched someone insist that they are having a great time and they are happy. I have seen that same person break down crying listening to a recording of themselves. I have seen a lot of diligent professionals (no air quotes this time, those people deserve that label) say, in no uncertain terms, that there's nothing we can do, and we needed to wait until life becomes so unbearable for this person that they can no longer escape the need to change. I have seen those professionals turn out to be right.
You don't abdicate personal agency by not working. Work does not create agency, kind of the opposite, in fact. Work in our society is coerced, it has to be, because its purpose is ultimately to enrich people who don't work. Working to create agency would require a wholly different approach to work, and it would, by definition, be an approach by which work is optional. This in turn means work would have to become something worthy of choosing over alcoholism.
If it isn't, that is still a societal failure.