A lack of tact?

I have great respect for Michael Apted, but did anyone else feel that he seems to lack a bit of tact? Some of his questions throughout the series come across as really judgmental/inappropriate/rude...but I realize that sometimes this is what makes for a good interview--and often the answers to the questions are insightful ones. And I understand that interview questions are also not always based on personal opinions but rather trying to project the questions/judgments the audience might have.

All that to say, the questions are understandable, but what bothered me a bit was some of the commentary. While he makes it clear that he has a relationship with his collaborators, he also discusses then at times like subjects rather than individuals who might be listening to the commentary--revealing more personal behind-the-scenes information they may not have been comfortable with. Plus, his discussion of his two misjudgments in projecting the future of Tony as well as Nick's marriage--while he admits that he was mistaken to do that--makes me question his motives/attitude toward some of the earlier documentaries. His attitude at times seemed a bit condescending, even. He swears that they bent over backwards to protect the privacy of each family, but I felt some of the information given in the commentary contradicted that, especially when he discusses why various individuals might have been embarrassed about appearing or a spouse was 'unsupportive' (I don't see how not wanting to be made into a subject inevitably being analyzed by sociologists is unsupportive of art).