I know it's hard to hear, but it's true 90% of you suck... and that's just not cool. I know it's hard to hear, but you need to hear that if you're going to improve.
Now, he's referring to people trying to break into the comic biz, but I think that statement equally applies to all the fanficcers and fan artists out there. They beg for feedback, but if it's negative, they bitch and moan, and question how anyone can dare decry them, while gaining this sycophantic following that hail every little thing they do, and never saying boo, because it might hurt their feelings, and these sensitive artists need encouragement.
No, they need criticism, and they need to know their faults.
And yes, I have recently encountered someone like this, but was nice and remained quiet to their face and opted to just not say a thing. This is my way of venting a little, harmlessly. ;)
Fortunately, most of the people I've encountered and hang out with online tend more towards that 10%.