Personal relationships are very difficult to address in all kinds of settings. In a large organization of 100,000 people where people live together and where many people are single, it's very difficult to impose a complete ban. There must be limits imposed in order to protect those who may be vulnerable.
This is why I indicated that, to me, the avenue for solving this issue was to start with the premise that the relationship can be abusive, so start with a presumption of a prejudicial personal relationship. In their jargon, that's what they call an “adverse” relationship. However, the way it was solved was through disclosure.