TL;DR: ChromeOS is Linux but it’s not Linux but it’s a Linux so count it as a Linux but not Linux. Half.

A quick summary of this [frankly, rather crappy] article boils down to “I don’t understand, why people ignore the 4% of ChromeOS usage when talking about the 3% of Linux usage?” written in the most facepalm-worthy way, spamming fallacies like there was no tomorrow:

• “Which is also Linux, but the wrong kind of Linux.” - strawman
• “which means that [desktop Linux]¹ has less than half of the [desktop Linux]² market.” - ambiguity (“1” refers to a subset of “2”)
• “It’s not a typical Linux, because typical Linuxes are tools for nerdy hacker types, and that kind of OS will never, ever go mainstream unless someone forces people to use it” - begging the question + ad hominem
• “So naturally the Forces of FOSS hate it. Of course they do. And how do they express that contempt? By saying it’s not a True Linux.” - repeating the strawman again, for an ad nauseam

Also note that the same type of stupid reasoning from the article would also “prove” that MacOS is a *BSD.

What a weird hill to die on.

I wonder what has the other half of the Linux market. Linux, perhaps?

If Linux only makes up half the Linux market, what the heck makes up the other half? 🤔

The difference is that nobody in the FOSS world would celebrate if Chrome OS had 50+% market share. That would be a terrible time for FOSS.