Harry mentions that during his trip to Paris for the 2007 Rugby World Cup semifinal, he had a man drive through the same tunnel where his mother had died at 60 miles per hour (97km/h), the speed with which Diana's car passed through the tunnel.

He mentioned that Harry could be sued by his family for breach of privacy, citing the 2006 McKennitt v Ash case which showed that "those in close family relationships owe a duty of confidence to each other.All I can tell you is that this manchild who once wanted nothing more than to work in an alpine fondue hut is patently obsessed with his wife. I’d take all my Opal Fruits and squeeze them together into one massive gobstopper… As the wad melted, my bloodstream would become a frothy cataract of dextrose. Retired Royal Navy officer Chris Parry reacted to the claims by stating that he had never heard a colleague "say what their score is. Harry doesn’t just expose family secrets in “Spare,” but lets audiences in on a fair share of embarrassing stories from his own past — such as the time he peed his pants before his first date with Meghan. Harry also claims that Charles and Camilla did not like William and Catherine "getting too much publicity" either.

The book and its content are parodied in a 2023 episode of South Park titled " The Worldwide Privacy Tour", which sees the Prince of Canada and his wife, who have been bashing the monarchy, go on a book tour to promote his memoir Waaagh and to demand privacy. One passage of the parody book lampoons Harry’s revelation about suffering from frost bite on his penis after trekking in the North Pole. It is 416 pages long and available in digital, paperback, and hardcover formats and has been translated into fifteen languages. During the book launch interviews with US TV stations in New York, Harry was accompanied by someone who appeared to be carrying a pistol case. Kemp was also critical of Harry's description of military training with the British Army as he claimed the Army had "trained me to ' other' them, and they had trained me well.It does parody specific moments in the original book, sometimes in quite an amusing and childish way (I do have a childish sense of humour, so this did not worry me in the slightest) but it did just suddenly stop, and you do wonder if an editor decided the final moments, which in the original covered the death of her Majesty, the Queen, were perhaps a little too much and too soon and removed them. Harry mentions that he was disgusted by his brother's response, but William lunged, and told him he loved him and "I swear to you now on Mummy's life that I just want you to be happy.

The book also sold 64,150 print copies and 55,850 audio and eBook copies in Australia in its first week, becoming the fastest-selling memoir since records began in 2002 and overtaking Darren Lockyer's autobiography. In Spare, Harry criticised the royal family and said Prince William and Kate Middleton supported his decision to wear a Nazi costume in 2005. The Duke of Sussex, 38, has faced scrutiny since openly admitting to taking a list of illegal substances in his memoir, Spare, and in recent interviews, which officials have warned could jeopardise his visa status in the UK. Russian conceptual artist Andrei Molodkin projected a sculpture filled with blood on to St Paul's Cathedral and covered 25 copies of Spare with human blood donated by Afghans as a sign of protest to Harry's actions and comments. She argued that the book's focus was primarily on the relationship between Harry and his mother Diana from whose loss he has not recovered.His father tries to provide some emotional support for Harry after Diana's death, sitting up with him until he falls asleep at night, but it feels as though his good intentions had to navigate some tricky barriers. A third interview by Michael Strahan on Good Morning America and a special titled Prince Harry: In His Own Words, were broadcast on 9 January on ABC. Contrariamente a quanto mi sarei aspettata però, non l'ho trovato offensivo nei confronti del "principeharry quindi tanto di cappello all'autore che è riuscito a trasmettere ilarità senza cadere nel ridicolo. The fictional account is only a slight exaggeration of Harry’s real-life memoir, which also blamed Prince William and Kate Middleton for his decision to wear a highly offensive Nazi uniform to a costume party. Is it a manifestation of his extreme privilege that he seems not to realise that most British people struggle with the expression of feelings; that the desire to run a mile at the thought of “talking it out” isn’t limited to those with titles?