Just a small nitpick about your comment:

> Functional programming is a reaction from the shift to the dangerous quadrant of the immutable-mutable/unshared-shared "Magic Quadrant" chart.

I might rather say "The recent focus on adapting functional programming is a reaction...". Functional programming itself is nearly as old as the modern computer (McCarthy's first LISP paper was published in 1960), but your phrasing kind of suggests that the entirety of FP is a recent innovation.