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?
Neither python or JS are “rigidly” OOP, they have support for them but you can very easily do functional or imperative programming in either. out of those I believe Java is the only one that “rigid OOP” is a fair descriptor for, and I could be wrong on that as its not a language I’ve used (c# which I have and started as essentially microsoft Java has moved away from that style by incorporating numerous functional features from f#)
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