The explanation is simple. The National Football League has no values, just assorted and unrelated reactions dictated by money, expediency, fear of activist groups, and stupidity.
This was the most recent example:
Washington Redskins cornerback Josh Norman was flagged after his fourth-quarter interception Sunday in a win over the Browns. He pretended to shoot an arrow from a mimed bow–veteran MLB relief pitcher Fernando Rodney has done this after every save his entire career–and was penalized for the unsportsmanlike foul of ” shooting a bow and arrow,” as announced by the ref. Fox analyst Mike Pereira explained to the TV audience that “Shooting a bow and arrow is just like simulating shooting guns. It’s a foul and it’s not allowed.”
The NFL refused to allow the Dallas Cowboys to commemorate the Dallas officers shot in a Black Lives Matter fueled massacre of police. Then it announced its support of the ridiculous Colin Kaepernick’s grandstanding protest of the National Anthem because, he says, “the United States systematically oppresses African-Americans.” Next, it submits the name of Darren Sharper—one of those oppressed African Americans, by the way— as a nominee for the Pro Football Hall of Fame. He is serving 20 years in prison for drugging and raping women. Now it deems a bow-and-arrow gesture as so offensive to the sport that it requires a major game penalty.
Meanwhile, the league still officially denies that the concussions it routinely inflicts on its players are the cause of their brain damage when they cease to be able to function and slide into depression and dementia in middle age.
Those who continue to support the NFL knowing all of this (you put money in the league’s coffers by just watching the games) are allowing their own values and their children’s to be compromised and corrupted in exchange for a few visceral thrills.