Well, again just because certain players don't share your particular dogmatic perceptions on patriotism does not make them disrespectful. If you are so interested in showing patriotism before a little game then Sunday night why don't you stand for the national anthem in your living room.
The free market has given the NFL a large audience throughout America, but it is voluntary. If you are so convinced that personal autonomy, and 1st amendment protections disappear during Sunday night football than
I suggest finding a different way to occupy your time.