There is no question that this could be done. In fact, I think that this is a fairly reasonable policy. It effectively amounts to a flat tax on wealth to fund UBI. Personally I would prefer a progressive tax to "flatten the curve" more at the top, but I'd settle for an inflation-based UBI.
But that is NOT what is happening at the moment. What is happening at the moment is almost the exact opposite: money is being injected mostly at the top in order to prop up asset values, with a little bit coming in to the bottom via the $1200 relief checks, and the middle via PPP.