No the Stonewall just loses
Is the stonewall dutch strong against catalan setups?

Such as this one:
Black has plans with Ne4, g5, Rf6, etc. as well as the more positional b6, Bb7, c5
I'm pretty sure those "Catalan setups" are just the fianchetto attack. And if the stonewall was made to be played against the fianchetto attack, I'm pretty sure that it works against fianchettos...

Dont move the b8 knight before the c8-bishop and queen
Try to manoveur the bishop to h5 and you are fine.
why move the bishop to h5? It's a valid plan but does take a lot of time.
How could it be good when white's mainline against the dutch stonewall is to immediately fianchetto the kingside for a Catalan setup?
I'm sure you end up in a standard dutch position but the difference is you know that white likes the Catalan setup, he was even willing to play it before you gave him further reason to. You're playing into his hands.
Such as this one:
Black has plans with Ne4, g5, Rf6, etc. as well as the more positional b6, Bb7, c5