Most synagogues aren't cult-like. Quite the opposite, really. However, there definitely are some forms of Judaism which deserve the label. Even my Israeli friends think the Haredi are batshit crazy. You would not accuse the people who made this film of being anti-semites:

https://en.wikipedia.org/wiki/One_of_Us_(2017_film)

It's fair to call out the wackiest religious cults, and Christendom offers many to choose from.