Sharing sensitive information honestly across discourses as an anonymous agent is different from disclosing such information within a discourse. Within discourse, trust in others is key. Inter-discourse sharing requires something else.
Musing a bit abstractly on identity vs. security.
But I also suspect there’s still a lot of old-world thinking in the “protection” of the data, even though it’s, for the most part, user-generated. Think about that for a second.