Hm... this may sound a bit weird BUT:
I think he is partially wrong.
FIRST: Yes, he is right about MMORPG having nearly no point. You shuffle around having IMMENSLY boring "Raids" for example... waiting for 40 people to get their heads out of their asses to mechanicaly and totally unrealisticaly kill some weird boss. Most MMORPG have no atmosphere, no logic (internal consitency) and the only things entertaining are:
1. Talking with friends while doing "stuff with your hands"
2. pleasure your primitive Hunter/Gatherer caveman part of your brain with: MUST KILL MORE RATS... OHHH SHINY NEW SWORD
3. figuring out the rules (Even though you find out that they are sickengly balanced and you never will be any different than one of the other 500 million-billion nightelf hunters... or whatever)
BUT: he is wrong with trying to emphasize good written story in an MMORPG too. NOW, don't get me wrong: I LOOOOOVE me some good story. It is one of the two essential great things needed for a good game (The other is "Atmosphere"). But the story in an MMORPG has to be written by the players. What most MMORPG's do not do is: Having the players change the world... have them feel rewarded for controlling something ( a Road, a village, a Planet.. whatever. Form their own alliances, betraying people, becoming friends. Not just "Go do some quests together"
Quests has to be authored by the players themselves. Of course there should be NPC's with some agendas too. Maybe have some GM play out story parts, involving the players.
But coming back to story: They cannot make the decisions so complex. The potential stories so manifold, the choices, options and COINCIDENCES so vast that everybody has THEIR experience, THEIR virtual "life" in there. Just this one example: All people will start off on some "Newbie Island" there they will bring back the lightsaber of some Padawan/NPC-Friend. And he will be happy. How can you bring it to him if he JUST GOT it... a FEW THOUSAND times from a few thousand people in the last hour? And all of them are right THERE, telling you where to find it, or teaming up to get it? It just destroys the atmosphere (The thing which i called the second important ingredient of a good game)
Ah well, rant over... Hm, Maybe i should really write that ranty-essay thingy about MMORPG-design already.