I don't get the big deal either. First off, Trump, despite being a f***ing moron, has the same rights to free expression that everyone else does. If he wants to say that players should be fired for kneeling... big f***ing deal. The same amendment that the protesters point to to support their protest, is the same amendment that Trump uses on a minute by minute basis.
Sure, what he says 99% of the time is stupid, not thought out, simplistic and moronic and he should definitely be spending his time trying to figure out what his job as President should actually entail, but this outrage is just getting boring.