not entirely true. some languages are very-IDE-aidable but verbose (java and c# come to mind), some are not very IDE-aidable but less verbose (ruby and python come to mind, various LISP variants also fit here I guess).

but that is not hard rule as, for instance, haskell is potentially-very-IDE-aidable AND less verbose.

now only the haskell IDEs need to mature :) but this is a mater of time.