The couple left the Royal Family in shock in March when they alleged a senior member of the royal family questioned what colour their son Archie's skin would be.
Elsewhere in the interview, Harry claimed his father Prince Charles and brother Prince William are "trapped" within the system, also adding Charles stopped taking his calls after he and Meghan left the UK.
Royal biographer Ingrid Seward said Harry "knew what he was doing", telling Page Six, "I can swear to you that, and he wanted to rock that boat.
"Quite why, I don't understand, but he did want to. And then he did, and I don't think he's surprised by the repercussions or that he regrets it for a moment."
Seward admitted she was puzzled as to why the couple chose to open up about their lives with Oprah, adding she finds it "difficult to understand" what point Meghan was trying to make when speaking about her suicidal feelings while pregnant with Archie.
Meghan explained in the interview she told the palace staff, but was ignored.
"You don't go to the HR department in the UK. You go and see a doctor, or you say to your husband, 'Darling, I feel dreadful, I need you to find someone'," Seward said, adding Harry was in therapy so "must have known people".
The expert said she felt Meghan struggled with royal life because she always "had a voice" and suddenly felt she'd been put in a "straitjacket".
She added that she doesn't believe Harry adequately explained what it's like being in the royal family and how it differs from being a celebrity in that it's "not about you, it's about the monarchy".
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