I don't think anyone is arguing that it is the grind they want back. What you, OP, fail to realize is that this is a RPG and not just that, it is an MMORPG. As it stands right now, there are little to no quests out there that need other player's aside from the ring battles. Blizzard states they want players out in the world seeing each other and doing things, but when you take the role out of role play by lessening the requirements needed to achieve the stories and completely by pass them, it no longer is a role playing game. You are rolling through the content to get to the end with little to no help because it is not needed. As it stands right now, anyone can get enough buffs, gear and material to make a toons leveling rate up to 900%+ plus the reduction of each expansions reduced exp since cata. Forgive me if I, as an old player, find these results unfun and unwanted for the mere reasoning that it is turning this RPG into a race to the finish line where repetitive boredom settles in and causes more players to leave until the next expansion. Rose coloured glasses my backside.
You do realize that the actual MMORPG aspect of the game is once you hit max level right? I leveled this toon to 90 pretty quickly. My first 90 took 2-3 days of playing 10-12hr days and farming ore/herbs the first couple days of MoP. It is the fact I want to level up alts and can't be bothered with seeing the same quest for the 5th, 6th, 7th, etc time. Oh and the quests are designed to be SOLO not group orientated. The group stuff comes at 90 with heroics>raiding, or even elites and world bosses.
Once at cap, THEN the real grind starts. MONTHS, not the 24hrs of getting 85-90, but MONTHS to get exalted with all the various factions. MONTHS to farm VPs for certain items. It was over 20 weeks of doing LFR before the sha touched gun dropped and by then I already had a better chance at a 502 as ToT just opened.
I know blizz is trying a bit to lessen the grind, but seriously, leveling is about seeing the lore, and why does one have to do that on EVERY character they want to level? I saw it 1x in at least each zone as I completed all the quests in every zone. That should be enough...
So HURRAY, less xp will be required, and I can work on my other chars to get them to 90!