*yawn* people are still salty about this? Move on, it happened and it was fixed. There was not exploiting because people were merely using game mechanics implemented by Blizzard themselves. This is no different than people who traded kills for Nemesis in WoD (and nobody was banned for that BtW. Anyone here who says otherwise are either lying or talking about someone who got banned for selling Nemesis boost for IRL money).
Hell, even IF it could be considered cheating, Anniefushia (the streamer Twitch paid, sponsored, and even put on the front of the Battle.Net launcher) admitted even she was farming rep off stream using this method because it was just way too good to pass up. If you think Blizz is about to infract their new golden girl who they just recently threw thousands and thousands of dollars in sponsorships to, then you're delusional
It's just honor levels, it's basically the PVP equivalent of people "exploiting" dungeons with the alt farming method or Kara to get to level 80 faster. Are we going to scream for bans for everyone who used those methods to level faster after 7.3.5?
They're not going to ban and/or rollback tens of thousands of players right before BfA just because a vocal minority are salty that they didn't hop on the train in time. It's done, over. The last time I saw so many kicking and screaming "EXPLOIT!" like children was when people were farming Broken Shore chests to unlock flying a few days earlier. Who cares? Get over it.