It's worth keeping cash around.
Not that worthless coins are anywhere near the top of the list of bad and wasteful policies. But if we can’t even solve the obvious low-hanging fruit, we’re not solving those bigger problems either.
It seems like saying if you won’t bother bending over to pick up a penny, how can anyone expect you to bend over and pick up a one hundred dollar bill - one is worth the effort and one isn’t. People regularly make efforts and propose laws to solve bigger issues - the issue isn’t effort as much as adversarial disagreement.
It’s also neither here nor there - an implication that not solving a really, really small problem says anything about an ability or desire to solve bigger problems is clearly incorrect.