We can disagree on the theology of צמצום לאו כפשוטו, we can disagree on priorities of תלמוד תורה, תפלה, שמחה, אהבת ישראל, וכו but the myth that the opposition saved chassidus from itself is one of the "big lie"s that has no basis in reality.
point to whatever changes you like, non of it is thanks to the חרמים ורדיפות which remain best left in history.