Not specifically discussing Kaepernick's complaints...but
I've heard the question recently "So if everything is racial, then is anything racial?"
Lately, anytime someone disagrees with almost anything, the argument is dumbed down to "oh, they must be a racist".
Be it immigration oversight for national security and other non-racial reasons, voter ID for the sake of just common sense knowing who is actually voting (or if they are even alive..lol), financial aid to citizens at least first (afterall, don't all kids have dreams--not just non-citizens?) , non-racially motivated historians asking to at least think twice before removing certain statues at millions in cost, etc.
Blindly throwing race into an argument takes the intellect out of a real argument about actual issues...sometimes.
It dilutes it when it's a topic that deserves not to be diluted.