A major, if not the principle, factor in Jews going “off the derekh” has always been the desire for freedom to engage in sexual behaviors that are prohibited by halacha. If you want to work with non-frum Jews, and Bennett is a politican trying to lead a country in which non-frum Jews are the majority, you have to live with it.
The reality is that sexual deviance (as defined by halacha), is as much part of being frei as eating treff and working on Shabbos.