Basically:
End of MoP: "Players feeling obligated to do RBG to get conquest cap wasn't fun - looking into ways to change that"
Beginning of WoD: "Good news, everyone! You no longer have to do RBGs to get conquest cap! YAY! Now you only have to do Ashran, Highmaul Coliseum and RBG to get conquest gear...wait that doesn't make sense...uhm...shit...oh well, let's just blame it on the community."