Please be aware that the source, the Center for Economic and Policy Research, is a think-tank and not a journal or research institute. This does not mean the work or conclusions are invalid, but it does mean the authors likely have an agenda.
I'm not sure what your implication is, though. Are you afraid of a liberal bias, conservative bias, pro-capitalist or anti-capitalist bias?
If I posted a paper from the Quarterly Journal of Austrian Economics, I doubt that you would consider the "journal" part to be a consolation.
The author (Dean Baker) is a supporter of ACA. Maybe this is some sort of attempt at fomenting support for bringing down doctors' wages in order to help bring down the costs of ACA.
Put another way: Just because no software is 100% error-free doesn't mean it's better to go with software that has had no QA whatsoever and is known to be very buggy.