This might seem really weird, and I understand if people don't agree with me. I don't think criticizing how skill challenges are described in the DMG has anything to do with criticizing 4th Edition. What the issue has been is not whether skill challenges are a good idea or not; just whether the rules in the book work the way they are supposed to, and if they have given good examples of how to make them work the best way possible. As far as I can see everybody who has been suggesting changes to skill challenges in these threads, has done it because they like the idea so much that they wish they had a system that is good enough for it.
If I didn't like the new edition, I wouldn't bother looking for ways to patch up little problems in it. The skill challenge concept has the potential of being a really major improvement on the game, which is why it seems to have become some of us "4E defenders" have been so bothered with that it is not really working so well as written.
I really hope people don't think that someone who likes something has to be blind to defects in it. Or that people would think that a great new mechanic that needs patching to live up to its potential is an excuse to bash a game. That would just be lame.