The problem with this anti-criticism approach is that it's damning Linux to an eternity of navel gazing. Nothing can ever get any better. The best hope we have are the instances where a few bright sparks, with their heads screwed on the right way, get together and make something cool (as happened with, say, Firefox back in the day). But that's rare and can't be relied upon.
The world of Linux needs critics. Even more so nowadays as Linux slowly seeps into all kinds of industries (the Linux revolution is finally happening, but in slow motion). New people are coming into contact with Linux. Most of them will have high expectations--the same expectations they have of commercial software. If things ain't right, they're gonna say so. Linux people are going to have to get a thick skin. They have to learn to deal with criticism, and--even more important--they're going to have to use it to their advantage.
Keir Thomas is the award-winning author of several books on Ubuntu, including Ubuntu Pocket Guide and Reference.