I've had the same thing with 7th legion. I hit exalted, and there's no paragon rep, so, why am I still getting table missions for 7th legion rep? Why do I still get their quest item rep turn ins from islands?
Doing world quests on Zandalar now feels like my rewards have been cut in half, and after week 1 mythics, most of the rewards have gone straight to the scrapper. The rep from WQ basically was the reward when it wasn't AP.
Like, I don't want more RNG mounts locked behind paragon chests like we had in legion, but a loot box with a modest amount of AP, trade goods, gear, or gold for every 10k rep past exalted would be lovely, not because I need any of that stuff super badly, but because I don't like repeatable content with diminished rewards, and I'm sure I'm not alone.