No, UBI makes sense right now (the exact level that makes sense changes over time), it is a lower-bureaucracy, lower perverse-incentives alternative to means-tested welfare (and, possibly, also minimum wages) as a means of providing a support floor (its not really a flat addition because any means of financing it will provide some form of clawback, and if done through the progressive income tax, it becomes redistributiion that compresses the pre-benefit-and-supporting-tax income distribution.

UBG is a completely different story, though.