This is not true.

https://en.wikipedia.org/wiki/Usage_share_of_web_browsers

According to StatCounter web use statistics (a proxy for all use), in the week from 7–13 November 2016, "mobile" (meaning smartphones) alone (without tablets) overtook desktop for the first time and by the end of the year smartphones were in the majority. Since 27 October, the desktop has not shown a majority, even on weekdays.