Ubuntu has won the Desktop and Server Linux wars so the article is no longer valid. RedHat doesn't even care about Desktop Linux or consumers using Linux.
Are you running Android on your Desktop? No. So, no, Android is a great phone OS. It and the whole crappy touch experience have not and will not replace a Desktop.
Even if you don't count phone and tablet mobile devices, I know more people running Android or ChromeOS for their desktop than I do any traditional desktop Linux distro.