I go by a very simple criteria. How has my life - and that of the vast majority of my friends, relatives and acquaintances been since a given president has been in office. This is financially, employment-wise, homeownerhip wise, etc., etc.
Looking around - almost everyone I know is healthier, wealthier and happier than they were six years ago.
Probably a dumb way to judge a presidential era, but one would think if the guy was that bad, things would be worse for the actual American people I know. And they aren't.
I mean, all my conservative friends still have their guns. My best friend was able to take a job for more money but without company health benefits because of the ACA and my wife's company notched 3 of their best 5 years ever in the last six.