Earlier quoted context omitted.
Wouldnt that same argument apply to people fighting for democracy in the age of monarchy? Why try to get rid of the king when he will just be replaced by a president? Dont even bother. Obviously power structures and concentration of power always exist in some form, but that doesn't mean we should never try to rein it in on occassion.
You cannot achieve that by replacing an almighty king with an almighty government dictating who gets what (which is a prerequisite of UBI).
With current social support programs the government does get to choose who gets what. But with a UBI, every adult would get the same amount, effectively removing the government's ability to choose who gets benefits.
Maybe I'm just misunderstanding what you are saying, I don't know.