The small set of people who are only motivated to work by the threat of destitution, and who would be satisfied by a pittance and choose not to pursue further labor, are people whose labor was likely never worth much in the first place.
The small set of people who are only motivated to work by the threat of destitution, and who would be satisfied by a pittance and choose not to pursue further labor, are people whose labor was likely never worth much in the first place.
Their labor may not be worth much. It still needs doing, and you're compelling others to take away any incentive to do it.
Remember: they're hired to do that work because your time as a professional thinker is much more valuable than you spending hours doing mundane tasks. Better you spend an hour writing software for $X and paying someone else to empty the trash & clean toilets & etc. for 0.1x$X, than for you to spend that hour doing those mundane tasks for $0 while being compelled to still pay that someone 0.1x$X.
So yeah, because you're not really going to do all those little things you rely on low-wage laborers to do, you're going to DOUBLE their pay (giving them that "minimum" amount for not doing anything, plus giving them that amount to do that work after all) with no increase in output, and a likely decrease in work done because by definition that minimum guaranteed income is enough to live on.
If it's uneconomical to employ people solely to do those jobs, then the jobs can be automated, or fixtures and processes can be changed to reduce the need for that labor.