chain carried through dungeons?

I was gonna finally get a paladin to 90, got to 53 before the patch, then to 60 afterwards, and now, I'm hitting outland, and hearing this nerfs quest drops...Welp, goodbye 90 paladin.

So with this XP Grind nerf, world of Warcraft po does it affect players that pop one of the 300% XP potions and get chain carried through dungeons?

I fully expect Endera to "mysteriously vanish" for a while. (ie, indefinitely)
For not letting the issue die.

Your martyrdom is noted, and will be honored.