I respectfully disagree, regarding the issue of Tznius:
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“And your camp shall be holy, and He (Hashem) will not see among you Immodesty and turn away from you.”
This is from the Torah, not my judgement of anyone, irrespective of whether anyone does Aveiros or not.
Vilna Gaon:
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“The Yetzer Hora is neutralized, in the case of men being engrossed in Torah study, and in the case of women by adhering to Tznius.”
Gaon Chassid MiVilna, Chapter 15, Note 21