Yeah there's no way I trust their methodology has stayed that stable over 15 years. Hell if you just look in the last year supposedly 3% of global users jumped from Mac to Windows in a single month (Nov 2023).
There are also loads of new Linux device classes that may have Linux in their user agent but aren't really "the year of the Linux desktop" that you're thinking of. It seems they try to count ChromeOS (though badly - seems like "Unknown" contains a lot of ChromeOS depending on the month), and obviously Android, but what about Steam Deck? Smart devices with web browsers built in? Is your Tesla desktop Linux?
I'd buy it's gone up; not to 4% though. I would be moderately surprised if 4% of web users had even heard of Linux.
Yeah there’s no way I trust their methodology has stayed that stable over 15 years.
There's likely some decently sized error bars. I'm not sure how accurate Statcounter is. It would be nice to see data independently acquired by another service to increase the confidence level. If Statcounter is only checking the useragent, then the accuracy of the data is certainly lacking, but the trend is worthy of note, or, at least, further investigation.
The year of the Linux desktop I'm thinking of was like 2008. That was then it became perfectly usable on the desktop and I haven't had to switch back since.
I don't understand why anyone care's what Linux's "market share" is. It's open source, no one makes money when someone installs Linux.