That's an impressive figure. Macintosh (desktop Mac?) is slightly less than double the X11 figure.

https://gs.statcounter.com/os-market-share has Linux usage at just under 1%.

I would hazard a guess that more Linux users are blocking the ad networks that StatCounter utilizes to collect their data than Linux users that block requests to fonts.google.com.

Lots of "browse the web from this phone box" and "the departures board in the train station that shows a webpage" will be Linux.

I bet many of them use Google Fonts, and with them auto-refreshing every 5 seconds all day long, they might get seriously overcounted.

I doubt that the fonts get reloaded when the page is refreshed. According to other posts in this thread, the cache TTL is 24 hours.

Most of these boards use kill -9 to restart the browser every half hour or so, and likely nuke the cache each time.