Ranking requires far less brain power than a rating system would.
Maybe the energy expenditure between the two is small for the HN group but for the general public, the aversion to doing the mental work would be enough to dramatically reduce turnout.
This goes for all countries, not just America.
Not to mention how easy it is to spread lies for something as simplistic as FPTP. The more complicated a system is, the easier it’ll be to spread lies about it.