mogold: First of all, Judaism does change – as the world changes, Judaism changes in order to keep to the Torah. Torah shebaal peh was written down because the world (and people in it) were changing.
Chassidus as a whole was a change – that’s why so many Rabbonim opposed it. As long as we stay within the rules, change is not a bad thing. Reform seeks to abolish the rules. They say the Torah was not written by Hashem. Obviously, frum Jews don’t believe that.
The Satmar Rebbe was a daas yochid. As for his “success”, let’s measure it now. 2 brothers, who fight over the dynasty. Why? Because of the money involved. It’s to the extent where on their father’s yartzeit, they can’t go to the cemetery at the same time. The last time they did, fighting broke out in the streets. Satmar chassidim are leaving Monroe and Williamsburg by the hundreds, not interested in living that lifestyle anymore. Some of their newer areas, such as in Monsey, have changed. They don’t hold to the strict standards that their grandparents did. They have changed.
On the whole, Satmar as R’ Yoel founded it is dying.