The amount of job postings say otherwise.
No they don't. On stack overflow jobs F# has 14 posts, closure 28 and Scala ~100. Python has 400+.
Other sites have similar totals. But they are filtering for London/UK/Europe, so that might be a bias.
Functional languages. The "year of Linux on the desktop" of programming languages. Also none of those look like pseudocode (Scala does if you ignore bits and squint).