I honestly think the vast majority of the anti-Sports RPF stuff is self-hating hockey RPF fans who, much like all the self-hating comics fans who show up every year to whine about other comics fans gaming the system, keep ragging on other people in their fandom for not following some arbitrary rules. Nobody else gives a shit, or has ever given a shit, or usually even knows enough about who is or isn't big in sports RPF to even complain about it, from what I can tell.