Is there some Intro To Linux we can point just people to in order to avoid things like this? The "GNU slash Linux" conversation is wearing pretty thin but it should be common knowledge at this point that the GNU project did 10 ten years of work so Linus could add the kernel and have it be the first completed system.
Should we point to Revolution OS (https://www.youtube.com/watch?v=jw8K460vx1c)?
Should we point to GNU's page about the issue (https://www.gnu.org/gnu/linux-and-gnu.html)?
Without getting into any finger-pointing, it's just history and we should all know it.
edit: Really. This is a thread celebrating 10 years of Kubuntu. Kubuntu's downstream from Debian, probably 1/2 - 3/4 of their packages are untouched from their state in the Debian repositories. Debian was sponsored by the FSF (Richard Stallman's foundation) back in the early 90's. Good for Kubuntu, I wish them the best. I also think it's important to recognize the others who have made projects like this possible. It takes nothing away from Kubuntu.
ElectricFeel's comment may well signal a shift in Linux desktop adoption, in that the less-technical public enters the game. IMHO this is an Ubuntu success story. He's an Ubuntu user that probably does not even know what Debian is, and though this isn't good in itself, it might be good for GNU/Linux adoption. We all called for the "year of the Linux desktop" but due to various reasons, there aren't enough users, so it didn't materialise yet. But there is hope. And KDE is going the right way. I love it. IMHO Kubuntu 15.04 will rock!