Good points, I thought the same, but they actually address that if you click the logo (though it's just a possible explanation of how that data point might be explained):
"FEARS OF VOTER INTIMIDATION KEEPING PEOPLE FROM THE POLLS
We’ve had a lot of reports of people worried about going to the polls because of threats of voter intimidation. While the fears are real — and we certainly expect to see one-off issues of attempts at intimidating voters (like the Trump supporters will bull horns in West Palm Beach) — there is no evidence to suggest that an organized campaign to intimidate voters is underway. "
We’ve had a lot of reports of people worried about going to the polls because of threats of voter intimidation. While the fears are real — and we certainly expect to see one-off issues of attempts at intimidating voters (like the Trump supporters will bull horns in West Palm Beach) — there is no evidence to suggest that an organized campaign to intimidate voters is underway. "
[1] https://projects.propublica.org/electionland/