Ohr Chodosh is correct that Rabbi Falk does not teach things as “halacha”. It is the sems & high schools that take his “suggestions” and force them on the girls as “halacha”. Then, when they get married and find out it was all false and has no basis in Halacha, they dress in tight clothes and claim that the whole concept of a woman’s dress in halacha is made up (bringing us back to “Tznius in Brooklyn”).
This.