That's a strange way to behave and live. Going by your logic of 'these people who like to boo Goodes' - let's tell them all not to stick a fork into an electrical socket.
People don't boo Goodes because they are doing it to stick to the man and disobey the orders of the AFL, they do it because they see it hurts and they like sticking the knife in a bit more just to see what happens. This isn't inherently racist, it's just a c*nt thing to do.
It's why a lot of opposition supporters scream that Selwood is a ducker or post that he ducks into tackles and should be knocked out to teach him a lesson. The behaviour is unpleasant and it's something that a lot of humans do (I hate to admit it, but upon self-reflection this is something I have done too - assumed the worst about a player such as Mitchell, when really, I don't know a thing about him). It's something to reflect on and perhaps try and avoid, because at the end of the day, this is another person who is taking this and it's really not a nice thing to do. You wouldn't do it to his face, so why do it from a crowd?
I actually don't think that first part is bad advice.
And I agree with almost everything you've posted. My point is just that the kind of attitude I quoted is feeding the problem, not helping it.