sankakucomplex or w/e is the stupidest site on the internet practically. They're just exaggerating the truth for effect.
Fatigue exists, but not that badly.
Oh, but in response to Bt, the fatigue system is a way to waste people's time more so than it is a way to keep hardcore players in line with casuals. Even casuals will reach fatigue at some point. It only goes away when you level other classes (kind of like how you had to level subjobs in FFXI to waste your time).
I thought it was a joke at first too, but SE seems really adamant about it for some reason. Perhaps they'll change it 'cause so many people are crying foul over it.