Well, "hate" is a strong word, especially since he said that's it's really just the Mario games he seeks to deny a "deep" plot (I do disagree, though, that having a deeper plot will make the game, I don't know, "darker"). I'd like the Mario games to have good plots (SMS worked fairly well and SMG's was underrated) but I understand the games can function fine without them (and have). However, there's trying to make a plot and failing, and then there's flat-out refusing to make up a plot just 'cause. On the other hand, this pretty much assuages my (admittedly irrational) fears of the game having the exact same plot as SMG.
...Then again, I guess it technically will have the same plot.
Also, Peach is cake-obsessed?