Does the US have a legitimate electoral system?

[Hammy]

Lest we forget, we should that the winning candidate in 1992 and 1996 did not have a plurality of the popular vote, along with 2000 and 2016.  There were three presidential elections in a row where the majority of voters did not vote for the person elected. 

The winners did have a plurality--a plurality is simply coming in first but not obtaining a bare majority. But it has been more common recently to have winners failing to obtain a majority.