There are people who act that way, yes. (They're not just in FP, unfortunately.)
But the value of FP doesn't depend on everybody using it being a wonderful human being. The value of FP depends on its ability to help you write (and maintain) programs. That value is real, even if some proponents are just wanting to feel smarter than you.
But the value of FP doesn't depend on everybody using it being a wonderful human being. The value of FP depends on its ability to help you write (and maintain) programs. That value is real, even if some proponents are just wanting to feel smarter than you.