This started to become much more common post-COVID.
/r/overemployed is a sub full of people sharing strategies about how to maintain multiple jobs at once. Some of those folks have 3 or more jobs. Industries of focus seem to be tech and sales.
I can never tell how much on reddit is creative writing for a cause, sometimes those stories sound more like elaborate / sophomoric morality tales / fantasies ... but I don't doubt folks do it.
