> People frequently have choices between jobs that are easier or otherwise more pleasant and jobs that pay more. For example, long-haul truck drivers get paid significantly more than short-haul drivers, but they also sleep in their trucks and don't get to see their families most nights. Likewise, a lot of jobs require you to get a degree or certification, which can be a lot of work, which people may not be willing to do if they don't need to.
That's a slight of hand. There's value in choice, and that value is being reaped by the worker precisely because poverty programs make it possible.
But let's go with that example. You're assuming the number of truckers and trucker-hours would remain constant. But they wouldn't. That's just not how dynamic systems work. There are other people for whom short-haul trucking is the less desirable choice than what they're doing now, or who work fewer hours than they're doing now. Without the welfare subsidies, the supply of short-haul trucking labor would likely increase--more people working more hours. Similarly, you're assuming the demand for short-haul trucking would remain the same at higher wages. But demand in economics is not the same thing as "I would like" or even "I need", and at higher wages the demand would likely diminish.
The whole argument is the economics equivalent of a perpetual motion machine, and it's sold by throwing contrived complexity at people and hoping they don't think it through. Like perpetual motion or free energy machines, at the most miniscule scale there are exceptions and caveats (maybe short-haul wages in particular would rise, especially after accounting for the totality of labor economy changes), but those exceptions don't scale to a systems level. That doesn't stop con artists from selling their Rube Goldberg machines, though, knowing the vast majority of people won't think it through.
What the rhetoric is trying to do is bolster support for a livable wage through radical policy changes by drumming up anti-corporate sentiment. It's in service of a normative argument (a "livable wage" is a reasonable social ask, IMO, notwithstanding its amorphous nature), but disguised as a scientific argument that can only result in failure by setting wrong expectations about how markets and policy operate, ultimately reinforcing cynicism.