Uh, as a woman, I strongly disagree. Tznius is a man’s issue bec it’s the men who have nisyonos when women dress untzniusdik. I think the reason you and many others are reacting so strongly is bec it’s uncomf to be told that what you’re doing is questionable and therefore, you’re defending yourself and other as well. No one likes to be given mussar and everyone wants to feel that they’re doing right.
On a better note, I heard what r’ Forchheimer said at the follow up speech that hatzalah got the least calls that time period bec of the many women who improved and took new takanos upon themselves.