Oh, ok. I misunderstood. As far as I understand it, the property value will hold a similar meaning as the when rule evaluation. In other words, this should only be set to true when the record is delegated.
The Operator ID will be created from a Model User as part of SSO-Auth. Even My id was created from the same Model User. If Model User had this enabled, then My ID and all ids in system should haven faced the similar problem. It is not like that; some of the times, this will be set to true and as a result Operator ID comes as blank.