Guaranteed employment is tricky to get right. How do you provide minimum wage jobs that are not soul-crushing, without destroying the private sector soul-crush

Guaranteed employment is tricky to get right. How do you provide minimum wage jobs that are not soul-crushing, without destroying the private sector soul-crushing minimum wage jobs? How do you even find productive jobs people would want to do (or at least find tolerable) that no-one in the private sector was willing to pay minimum wage to get done? How do you provide jobs to a wide range of contextual needs, from ages 16 to 65, office workers to labourers, physical and mental impairment, neurodivergence, ability to travel, etc? How do you fund the administrative burden of matching jobs to people? What do you do for the people who still cannot work for various reasons - total disability, caring for another, etc. You still need provide a wide gamut of social welfare programs for different needs and circumstances, with its concomitant bureaucratic cost and inefficiency - or let people starve, or give them "jobs" that have no productive output, just performative burdens. What's the actual upside of guaranteed employment programs over a UBI?