Talk to their Rav. Maybe some thing you’ve convinced yourself are halacha are actually mishugasin or chumrot, and you may be placated by what the rav says. Or maybe he didn’t recognize his people were struggling and he follow your advice by inspiring his people in his next Shabbat shiur.
Either way, it’s possible the way you talk so hatefully of other Jews is probably a bigger blow to G-d then how these women are dressing. Or not but it’s not only everyone else who has what to work on.