If I have understood Zuccaro's comments correctly, this is not so much about land owner permissions or setting down in the event of an emergency but addresses those occasions where continued flight is at the discretion of the pilot.
Given Zuccaro's comments at the beginning of his statement (in the linked full text version) where he cites technical/mechanical failures being in the minority [in relation to accidents] I would say that much of his advocacy to "land" relates to flying in conditions of poor visibility.