I feel proponents of any programming language put a lot of spin around what isolated aspects it is good for, but fail to illustrate what a programmer in even one target domain gains from using it.
Are there programming language implementations unlike what is described above, that you feel back up their marketing?
Fun fact, you can totally do functional programming in C++ too. Actually, it is in the top-right of the λ-cube, making it (in a specific sense) a more functional-programming language than Haskell or LISP :D