From your own article: >President Trump and Treasury Secretary Steven Mnuchin worked to convince those senators that the universal $600 unemployment boost would be more efficient than varying supplements by income because that would require the federal government to administer funds through a patchwork of state-run unemployment programs, The Washington Post reported.

The point made above is that this was a well-known aspect of the supplement. That the executive had other reasons for pushing the bill anyways doesn’t change that.