Nearly everyone here is automatically going to say they love GRRM and Erikson, Hobb, Tolkien and tell you how brilliant they are.
not to digress from your perfectly valid point, that this is a fairly hard-geek-core group etc etc, but i think there is good evidence to say that adulation for your author list is far from universal here.
true, there are few serious detractors from Tolkien, and GRRM is widely embraced. but from what i've seen Erikson and Hobb have much softer support, here and in general, and i'd include myself in the "less enthusiastic" part of that crowd. ditto for a number of the other "big" names bandied about on these forums, but that's beside the immediate point.
[begin rant]
as i read it Winghead's point was to question the widespread praise for the three named authors and question his difficulty if finding what was so great about them. i've been reading fantasy for almost forty years and frankly i agree, i have the same trouble.
i don't see the point in pressing through 100s of pages of uninspiring work to find the supposed treasures buried elsewhere. who's got the time for that? is it just because they couldn't find anything to watch on TV? for my money that's just bad or mediocre writing: either cut the padding and crap or be judged on the dreck you've left for us to wade through.
as i see it part of the reason our beloved genre is treated like the unwelcome cousin of the literary world is that we as fantasy readers are so universally undemanding and accepting of sub-par efforts. few other fields of work are excused with things like "you've got to get past the first 250 pages, then it really starts to get pretty okay". seriously? do people really have that much spare time on their hands?
imagine if you asked about a new film and people said "don't worry so much about staying awake that first hour, the second hour has some really great scenery." what would be the chances that you'd ever bother to give it a second thought, never mind shelling out your time and money to see it?
i think fantasy lit needs to be held to higher standards than "read half of it just so you can read the other half of it". in screenwriting there's a general rule that if you don't have your audience "by the balls" in the first five pages (5 minutes) then you don't have them at all. something like that might be a good thing for us fantasy readers.
personally i give a book or series 50 pages, very generous imo, and if it's not happening by then i'm done. i know no one really cares a fig about my particular way of reading -- nor should they -- but my point is that good writing should be good pretty much from the start, not after 100s of pages of unedited bumff.
so yeah, some of the oft applauded shouldn't be, at least not so much. but then again maybe fantasy readers in general just have longer lives and lower standards than other folks.
[end rant]