I've been a regular user of Debian and Ubuntu for the last 20 years and even though I love the idea of Linux taking market share from Windows the article doesn't in any way analyze the reliability of the statistics.
Statcounter says it gets its desktop operating system (OS) usage stats from tracking code installed on over 1.5 million global websites generating over 5 billion monthly page views.
So... How reliable is this actually? There are a millions reasons for me to fake which is and web browser in using. Some sites actively sabotage the user experience and usability if the OS is not identified as Windows or the web browser is not Chrome/Edge.
I've been working IT since the 90's and there's not a 4% market share of Linux when I look at my friends and colleagues that works IT.
The ones I know that doesn't work IT definitively don't use Linux. Att least not in other things than Steam Deck and Android (Linux as in "modified kernel") and maybe some premade img for RPi