This isn't a technological change - they're just publicly stating that members of the community are being harassed (especially women), and that's not OK. So it

This isn't a technological change - they're just publicly stating that members of the community are being harassed (especially women), and that's not OK. So it's not de-anonymisation, it's calling out bad behaviour that is often ignored (because it's nicer to pretend it's not an issue).