These kinds of statistics don't mean much... I mean who uses Statcounter anyway? If Google Analytics provided figures, that could be more believable due to its prevalence. 

However, how many #Linux users browse the web without some kind of ad or script blocking solution? How many of them enable #telemetry on OS and apps? Are most Linux users gamers for the Steam stats to be relevant?

I think that considering the nature of GNU/Linux, it's mostly #foss ecosystem and its #privacy minded community/userbase should lead them to conclude that it's being underreported if anything. 

We will overtake them from behind and I doubt they'll see it coming before it's too late.