I didn't mention anything about design specifically. I referred to understanding the genre as a whole. Your examples are rather poor though on that side matter. How exactly does taking the skills out of an MMORPG no longer make it an MMORPG, when the concept of grinds being removed does nothing at all? I never heard of anyone making that claim between the two. In fact, I dare say that most people would associate the grind to be more fundamental to an MMORPGs identity than "skill".
You don't see a grind in FPS games because it's not a genre associated to it. However... if you add in the RPG element, what happens? The grind is there. Borderlands is a perfect example of that, where it's an FPS and an RPG. Seriously, name a single traditional style formula RPG that does not have a grind to it? In other words, an RPG that involves leveling up and bettering your character in some way (gear, skills, etc). You can't. It doesn't exist because the genre itself involves it. You're arguing for something that cannot happen without changing the genre itself.
You could take out many things from everything that ever existed, and it would still seem to be the same. Much of the "grind" in an MMORPG involves RNG. So, lets say that you take out the RNG from an RPG. It'd be the same game right? Let's say you did the same thing with D&D. You took out the die... would you still consider it the same thing? I mean, the players are still there and the DM still exists. You only took out the random frustrating part of it. Hell, even for this game, you took out the leveling since... well, that's a perfect example of a "grind" that everyone deals with. Immediate "max" level. You really can't pick and choose your arguments when talking about a genre as a whole.
I mean, do you really believe people will stay in an MMORPG for years if they got literally everything within a week? Taking out the grind will indeed keep the content there, unchanged, but it won't keep the players there... which is exactly why it exists. Not everyone likes the grind, but that's how it works. That's part of the reason for what kept players around long enough to make MMORPGs a mainstream genre. The grind keeps players around long enough to experience many things they otherwise wouldn't from instant satisfaction. It's a design partly based around psychology (many genres of games and forms of entertainment do the same). People write books on the environment within casinos and the human brains reaction to it. Everything has some sort of underlying reason behind its existence.
Besides that though, I'm still waiting for your source of information behind much of the things you're claiming. Such as SE claiming they will remove or never add in any elements of "grind" to the game in the future.
And yes, the MGP argument is over for Chocobo Racing. I have a feeling we'll see you again shortly after complaining about it though lol.