I'm not a FP expert, but I do try to use FP as much as possible and yes, I agree that there is some serious dorkiness possible with certain PLs.

Anecdote, not data, but I've found that Rust, Erlang, and F# (if MS stack) tend to be in the sweet spot of expressive enough without drowning in symbols, without being as mushy as, say, Python/Ruby/pick something.