Re: In your dreams.
From your link:
You cannot - as a web developer - rely ONLY on statistics. Statistics can be misleading.
Note: W3Schools is a website for people with an interest for web technologies. These people are more interested in using alternative browsers than the average user. The average user tends to use the browser that comes preinstalled with their computer, and do not seek out other browser alternatives.
So you could infer that people interested in Web Technologies are twice as likely as the common herd to use Linux, a ringing endorsement.