This, so much this, I've been thinking about making a thread especially about this. The reason I don't like grinds in wow either is because they always go in and nerf them.
Sure I understand it for things like allied races, but mounts? Just no, it's easy enough with flying and overgearing, we also don't need the quests to give 50x the rep, it just makes doing anything while it is current feel like a waste of time.
Take Anima for instance, I never bothered to gather anima in 9.0, why? Because I knew come 9.0.5, 9.1 and very very likely 9.2 it would get nerfed so much, and I was correct, now we are swimming in the stuff and I still didn't grind it, but I've still got too much just from passively getting it this patch.