Dude get it through your head. I have tried this ability for hours. I have LIVED this ability.
And no, your analysis of trends is false. People have adapted to changes but that doesn't mean nothing was lost along the way. The game has lost a lot in game mechanics as it has been dumbed down to the WoW level. Yes, the WoW level is still a functional way to clear battles, but that doesn't mean it's more fun or better. Just because it ended up not breaking the game doesn't mean the concerns have lost any relevance.
I remember the MP regen debate well, and guess what, it's still senseless that moving 1 inch resets your MP regen. It's stupid that you have to stand there like a stone. That's not particularly fun. Most other games I can think of have MP regen stats and a set MP regen rate that you can use while MOVING. You argued that it wouldn't be that big of a deal, and it didn't break the game but it is still annoying, stupid, and unfun. A lot like you actually.
I think you're on the wrong side of the debate. Your first instinct is to accept whatever SE throws at you, yes, much like a baby suckling at dear mother.

I've always been anti-establishment so my first instinct is to be critical. I have no problem accepting forward-thinking design decisions, but guess what, this is ripped from a decidedly uninspired MMORPG. Maybe you just don't see the big picture. Have you played many other games?