Among top grandmasters the Dutch is a rare defense, which is good reason to play it! It has not been studied very deeply by many opponents, and theory, based on a small number of 'reliable' games, must be rather unreliable.
Bent LarsenIn my opinion the Open variation is absolutely correct - and more interesting than the Closed.
Bent LarsenA gambit never becomes sheer routine as long as you fear you may lose the king and pawn ending!
Bent Larsen