All of the LWN readers probably use Linux on their desktops, but that is not representative of anything.
There are at least a couple of things that would need to happen in theory before Linux can have a meaningful chance on the desktop:
a) There should be commercial desktop software development for it.
b) Hardware manufacturers should develop and supply Linux drivers.
Neither a) nor b) is going to happen for obvious reasons. Consequently, Linux has no future on the desktop.
Don't get me wrong - I am not happy about that at all.
On the other hand I believe the situation for fixed hardware devices, embedded and servers is much more positive, and in the context of this article Linux doesn't need help there (from Google).