IME -- and I used Ruby and JS a long time before starting Haskell -- you have to care about types in Ruby and JS, too, and, if anything, its more mental load in the dynamic languages, because you don't have a compiler pointing out your mistakes for you, you just have to reason through things manually when your code doesn't work as expected -- or think things through very carefully on your own so it doesn't break unexpectedly.

Though some of the error messages produced by Haskell compilers -- well, GHC in particular, don't know as much about others -- can be downright cryptic, but usually they'll at least point in you in the right direction.