I'm gonna say ownership assumes players under contract are always on company time, this is why their off the field behavior can get them in trouble with the organization.
I still go back to the fact that this is a 45 second statement, done peacefully, and usually not even on TV, before the game starts.
I used to get so annoyed at players praying during games, but never made a big deal out of it. Didn't like them demonstrating about their religion during 'my time' watching the game. I remember the full Bills team praying at mid field. Why was that ok?