To be fair, being vocal about racial and social current event issues is not the same as making racial epithets, slurs, or otherwise being harassing on the basis of some protected classification.
I think Edge confirmed that all prior indications were that he did keep the politics generally under control prior to about 6 weeks ago so in my estimation this is the first new info we have about him not getting along in the locker room.
And no it is not exactly surprising to me that he wasn't able to shut the F up about politics in the locker room, given his twitter behavior, but most of my contention with what you had previously posted centered around the contention that he was, or was acting like, a racist or bigot. Those two things aren't the same and one is infinitely more believable to me than the other.