To show a few individuals living their truth, they absolutely needed to deride and denigrate tens of thousands of other individuals living their truth.
They are just focusing in on a specific negative behavior (and truth) of many chassidish communities.
They are just showing the truth for plenty of people who try leaving the Chassidish community. Again, this is not a movie about the Chassidish community. It's about what it's like for many people who try leaving. Is it pretty? No. Does it show Jews in a good light? Def not.
As a Yid it doesn't feel good having our faults in the spotlight.
And I do personally look as them as faults. I am aware that there are many others out there who feel the people treating those who wish to leave in awful ways are justified.