In the Stonewall, there are certain setups from black where if white continues playing the Stonewall he is just considerably worse, if not positionally losing right out of the opening.
That can be said of virtually any opening. That is, if you play poorly, and don't adapt to what your opponent is doing, you'll probably lose.
The Stonewall Attack...
https://www.chess.com/blog/RussBell/stonewall-attack
In other words, Pharisees are players of the white pieces who refrain from creative chess and try and prevent others being creative...
The London doesn't prevent black from being creative.
There are many ways for black to play against the London. You can choose a different way every time.
Black can play a Slav structure. Or a King's Indian. Or a double fianchetto. Or a Queen's Indian. Or a Dutch. Or a Benoni structure. Or a Semi-Slav structure. Or a Tarrasch structure. Or a gambit ... Or ...