this angle of where to inject money into the system is the only potentially reasonable argument i've heard for UBI so far (but doesn't address its many other adverse consequences).
without much consideration by us commoners, we've come to accept that money must be injected into the economy through large financial institutions that gatekeep and rentseek.
money is literally the intermediary for trading the fruits of labor (not capital) with each other, and the closer money is injected into the system at the point value is created (when labor turns raw materials into desirable goods), the better.