Aaq, every generation has its nisyonos and resources. Prewar jews had access to tzadikim and talmidei chachamim that were unlike anything we can imagine in our time. They were presented with an opportunity to leave the ghettos and pursue an olam hazeh life. Some chose Torah, and others chose ta’avah. Rav Hirsch championed a non-ghetto Torah life where the Torah Jew spreads Torah around the world and makes a kiddush Hashem by working among goyim, while maintaining impeccable adherence to Torah.
Maskilim, reform, and what would later become MO all gave into their ta’avos and embraced modernity not leshem shomayim.