Quite right, back on those days FP was Smalltalk (yes really), Scheme, Common Lisp, Emacs Lisp, Caml Light (no OCaml yet), Standard ML and Miranda (no Haskell yet).

Which like you mention is where I point those hipsters to.

Then again, all new generations think they know best.

FP doesn't even have a definition (though pure-FP does, but it, too, can be a bit ambiguous and depends on how you define effects). FP is mostly accepted to be those patterns practiced by people in the FP community. I heard someone deeply involved with FP say, "FP is more a community than a well-defined programming style".

Language evolves; "FP" today means something different from what it meant 10 years ago. There's no need for dismissiveness in either direction.