I'm not exactly sure which part of the interview you feel points out a discrepancy between Osensei's practice and purported purpose, but then I also can't vouch for whether this honorable interviewee's perception of Ueshiba's practice is accurate from an objective point of view, or if it's being reported after passing through the personal filters of the perception of a person who would not, in the article, claim that what he was doing is Ueshiba's aikido and thought things had taken the wrong turn when Osensei made it clear to him that aikido was about fostering peace!
I also never heard that Kisshomaru Ueshiba expected the interviewee to take over Aikido when Osensei died!!! He must have made quite an impression on the Founder's son! Even more than Tohei I guess! He is said in the article to be at the time the only living person to have received the menkyo-caiden from Uyeshiba - are you his student? If not, how come?