The "if smart people voted" argument is invalid.
"Democracy" is defined by majority, the same that defines "Mediocrity." Mediocrity and Democracy are intrinsically identical - that is what "Representative" Democracy was trying to over-ride. Representative Democracy means the "average" (mediocre) people select representatives most representative of their mediocrity.
The selections offered are pre-selected by vested interest to insure their vested interests are served first, if not exclusively. Representative Democracy means rigged sleaze. So we have Rigged Sleaze manipulating and corralling Mediocrity.
"Smart People" are grossly outnumbered by mediocre/average people. The "votes" of "smart" people will just be absorbed in the mass of idiocy and the rigged system. So the "Lets turn this thing around" rhetoric is as futile on this point as it is on others. The system you have is exactly what you get with the system you have.
Don't question anyone's intelligence because of who they vote for. Question their intelligence because they vote at all.