Yeah seriously. I don't think he really understands who his audience is. Also the fact that he considers responses like "OMG it's so hot" (actual review) as actual "feedback" is crazy.
And yeah x-factor, you make a good point. I think it's healthy for someone to hate their own work to some extent. There's not a day that passes where I don't look at my art and think: "this, this and this is wrong"
And building on another one of your points: yes, there is a certain skill threshold under which an artist will benefit more from simply practicing than receiving detailed critiques. It's that "learning stage" that most of us are stuck in for years before we become competent (hell, I wasn't competent before 2011). For example, you wouldn't write a detailed critique on a crayon drawing by a grade schooler--it wouldn't make sense to. I usually don't leave reviews like "the anatomy is poor", but I would have to re-draw the entire pic or offer references to point out every single mistake. And I'm a guy who usually gives rather detailed reviews, too. But in this case, especially one where the artist displays consistent anatomy flaws in all of his work, it would not have helped at all.