Idk, having a day job so you can fully engage in your passions without having to compromise the thing your passionate about for commercial concerns, while maybe not ideal seems at least consistent with the ideals of punk.
Having a day job is not the issue. There are plenty of day jobs where you don't have to sell out your supposed principles to pay the bills so you can spray graffiti at night. Have you seen what's happening around us? The effect of these day jobs are the thing they're supposedly fighting. They're the ones making the world worse while they call themselves the resistance. I just hope the money is worth it.