Are CppCon attendees more vulnerable than other parts of society, that are still open to this person? If not, then is it really CppCon's place to "protect" anyo

Are CppCon attendees more vulnerable than other parts of society, that are still open to this person? If not, then is it really CppCon's place to "protect" anyone? "Protection" is something I expect from schools or youth sporting organizations, not professional conferences. In other words, why not just call this the prison system's failure to protect the community by releasing this person, and that they should have kept them jailed for life?