Meh I don't think he is saying anything that isn't true. If you want to read a players thoughts that the NFL is most likely pissed about, DeAndre Levy is calling out the NFL and it's shenanigans on CTE:
http://www.freep.com/story/sports/nfl/lions/2016/03/30/deandre-levy-cte-detroit-lions/82420704/