I've never booed Nebraska players, but it's understandable the frustration fans have with a team or coaches, and some players. FWIW, and I've said this before, I always thought T.L. was a class act and tried as hard as he could. Sure, he struggled in many games as did the entire team, but to each his/her own when it comes to voicing frustration!
https://www.landof10.com/nebraska/nebraska-football-tanner-lee-nfl-draft-2018-nfl-mothers-day
https://www.landof10.com/nebraska/nebraska-football-tanner-lee-nfl-draft-2018-nfl-mothers-day