yes. a lot of people are unaware of puerto rico’s status and its peoples citizenship.
Anecdotally (i know thats not a good example) most people I speak to always ask if needed a visa to more to one of the 50 states, they ask if you need a passport to visit and they ask if you can drive to PR.
But you already knew about the statistical peculiarity that was the 2016 Electoral College result, so I'm guessing you're repeating this hoping for some alt-right points on HN? Or just to demonstrate that public policy polling and statistics are somehow a big snake oil discipline that you're too intelligent to fall for?