not exactly. that's applying modern times to the past. the real reason is that the founders were petrified of a direct democracy. they wanted a relief valve in case the population voted for someone unfit in their minds.
FTR i'm not saying trump is unfit!
check out the federalist papers. its not about heavily populated areas "controlling" elections. it was about not trusting people to be smart enough to tell the difference between someone who is dangerous to the country and someone who isn't.
“the office of president will never fall to the lot of any man who is not in an eminent degree endowed with the requisite qualifications.”
http://avalon.law.yale.edu/18th_century/fed68.asp