Quite aside from whether I am a Trump "fan", I am unabashedly an NFL fan. As a long time season ticket holding fan, I don't want to see any protests as part of the event, even if the protest was "pro-Trump". I like my sports without a side of politics. I'm not American, so the "disrespect to the flag" is not what riled me up (although I understand why it could). What irritated me was the idea that I didn't pay (more and more each year) to see somebody grandstand their political views, particularly views I don't agree with. I paid to watch football. If the NFL wants to dress the game up in a wrapper of ceremony, I don't mind, as long the ceremony doesn't irritate me. It's bad enough that political correctness is endangering the existence of NFL cheerleaders (already gone from Buffalo). Don't wreck my entertainment with political idiocy!
And lastly, I expect the NFL to listen to people like me - people who are paying the bills - rather than a bunch of whiners who don't attend games and at most only pay attention to Super Bowl commercials and go to Super Bowl parties only to drink wine and eat canapes and couldn't even tell you the score at any time.
Maybe Kaepernick could start up an all protest league where people could dress up as football players, protest for 60 minutes, and only play football during the anthem? I suspect he wants to hang on to his NFL money enough not to try that!