@bennett https://www.espn.com/nfl/story/_/id/36003498/new-field-turf-installed-metlife-stadium-home-giants-jets
They did actually upgrade the turf over the offseason after complaints last year. The players all prefer a grass field and have been pushing for all NFL stadiums to be grass, but just wanted to make that correction about the turf.
No guarantee that injury doesn't happen on grass either. There were some non contact injuries on grass this week as well (JK Dobbins for Baltimore tore his Achilles on a grass field).
(I do support push for grass fields)