Ubuntu also fell well short of its stated goal to have 200 million users by the end of the year.
Alas, the stats currently on Canonical's website currently claim a mere 40 million users.
Taking the figures on distrowatch as a rough guide, there may be something like three times as many users of Linux Mint -- which is based on Ubuntu -- as there are users of Ubuntu qua Ubuntu, so that's another 120 million using an Ubuntu-derived system, bringing the total to 160 million.
Then there's lubuntu, Ubuntu maté, etc., are they included in the 40 million?
Taken all together, Ubuntu's usage is not as far short of 200 million as the article suggests.