That being said, I'm typing this comment my workstation running Linux and I for one am getting very tired of this year of the Linux desktop joke.
What OS you run is an individual choice, stop trying to declare a single winner.
Realistically linux did hit it big, but on a phone OS. It's now one of the most installed kernels in the world, but its brand is hidden. Linux is also incredibly important in the server space, and everyone knows this.
Linux will never have its year on the desktop in my opinion, but it will still be all over the place in the server/phone space. It just won out in other areas than the desktop.
They were not actually, this is a myth. A few tech "journalists" wrote such articles which people started making fun of. But no, regular Linux users never claimed that, or at least not in any significant number that I know of.
You != masses.
There might not be a clear single winner, but there is a clear single loser. Statistically speaking.
Myself and a lot of other people are using GNU/Linux and other libre operating systems with great pleasure and, finally, growing hardware support. I could not care less if 90% of desktops are Windows systems or if an additional 9% are OS X machines or whatever.
tl;dr: Just use what works for you. If it supports your ethical values, itäs even better!