I'm going to expand on my earlier point: Firstly, champions attending the White House is a more recent tradition. It does not need to be a permanent one. Second, the decision to attend is a political statement as much as the decision to not attend. Third, sports organizations have a right, not an obligation, to attend. Obviously that extends to individual players as well. And since these are both optional and political exercises, it is perfectly within reason for fans to critique these organizational decisions. It is probably every bit as rational as critiquing other organizational decisions, or being a fan in the first place. I suppose this doesn't need restatement but maybe it does.