The US is 240 years old. during this time (before Trump was elected, this year) there have been 4 presidents who have lost the electoral vote. So every 60 years one of the presidents gets lucky, and before Bush in 2000 it had not happened in 112 years.
Yes, it is a flaw in the system to a certain extent, but given that claims of voter fraud and rigging are far more prevalent is it not reasonable to say that this is the issue that should be tackled first.
Also, 126,000 New York voter polls were purged, due to death or duplication. This is a single state. When you have popular vote margins differing by c. 400,000 the slight margins of error imposed by the electoral college system seems to pale in insignificance to dead voters getting impatient for the Second Coming and the Apocalypse and trying to vote for their preferred warmonger, trump or hillary.
So i think that when citing the popular vote it is important to note that this is a rather nebulous concept, especially since it so poorly describes only eligible voters.
The US electoral college system is just as broken as the proposed US popular vote system as far as I see it. However, you could argue that the electoral college system only helps compound the inaccuracies inherent in the popular vote system.