"By my count"...
Which means pretending that every single "unknown" desktop, which is a larger percentage than the Linux desktops, are Linux.
And also by considering ChromeBooks, which also have a larger percentage than Linux, are Linux.
PS: Someone changed the title of this submission after my comment. It was originally something like "By my count, Linux has over 11% of the desktop market." This statistic is obviously clickbait and false, even if you count ChromeBooks, though ChromeBooks are not what people mean when they say "Linux desktop".
Until ChromeOS get its own OS (wasn't it supposed to be in 2019?), it's still a Linux.
Chromebooks are quite literally linux...