This leaves white fans out in the cold - and forced to make a decision about whether the sport is enjoyable enough to watch in a detached way without considering the attitudes of its participants toward them. Many will still continue to see their NFL teams as proxies for their cities or regions and will support them. Those who are inclined to give up NFL fandom have probably already done so. So the owners have probably calculated that there isn't much more downside in letting the players do whatever they want - announce this policy change but don't actually do anything to enforce it.
Agreed. The NBA is just as bad.