Not necessarily UBI; one just needs an adequate day job. Then the hobby could be creating value with no expectation of any direct return: writing a blog, writing and giving away music, writing open-source software, doing any volunteer work, etc.
There's something more than just an adequate day job (which is perhaps necessary in more ways than just "get the money get the cheddar") - because we can find pages and pages of examples of "well paid" (doctor, lawyer, tech) people who are drowning in debt, living paycheck to paycheck, and perpetually unhappy.
There's something more than just an adequate day job (which is perhaps necessary in more ways than just "get the money get the cheddar") - because we can find pages and pages of examples of "well paid" (doctor, lawyer, tech) people who are drowning in debt, living paycheck to paycheck, and perpetually unhappy.