I don't understand. If you want to be "an artist", why not work at a regular job doing part-time, and doing your artist stuff part time? Lots of people in STEM

I don't understand. If you want to be "an artist", why not work at a regular job doing part-time, and doing your artist stuff part time? Lots of people in STEM have creative aspirations that they pursue in their free time, why should the people that didn't pay attention to how to organize your life be the one that get help?