Using UBI as a band aid on the societal wounds caused by Capitalism, is in my opinion, ignoring a bigger issue. That's not to say UBI isn't a good idea, though.
We're in the midst of an ecological catastrophe, where our very existence as a species is at risk. We're driving towards a cliff edge and the discussion here largely focuses on a strategy to get more fuel in the car. We need to change our fuel, rethink our metrics of progress and change our course.