This happens pretty much every update cycle. The new OS is still terrible and unfamiliar and incompatible, and the old OS still has good availability. The only difference this time is that somebody wrote an article about.
Strange, I don't recall this being the case with Windows XP and Windows 7.
Windows XP built on the NT4 kernel that Windows 2000 solidified, and added crucial Win9x software compatibility. It effectively replaced both Win9x and Win2k in one fell swoop.
While Windows Vista was widely panned compared to Windows XP (and for good reason), it was a technically better OS than XP; it just couldn't overcome the flaws. Windows 7 fixed everything that was wrong with Windows Vista, and rapidly displaced Windows Vista sales. 7 is also a better product than XP, though the system requirements are substantially higher. Most consumers that stubbornly held onto XP were because they didn't want to do a hardware upgrade, even though 7 is a much better OS.