Otoh, some women use this while referring to other women, e.g. "us females need to stick together!" - in a totally positive and inclusive manner (or what looks like that, from me on the outside - i.e. not using language in such manner myself, for either men or women).
So maybe instead of a red flag it's more like an orange one? VERY noteworthy, but not enough on its own to justify cutting off contact with someone, whereas for an actual red flag you would... right?