>All-in-all I'd rate this as just another piece of useless web-published "information".
That may be so - but then, the question arises: where to get more or less trustworthy information on what languages are the most used / most in demand?
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)