How very revealing. This is about a person who could never deal with being No. 2. I'm not sure this title will help Harry's cause, but what of his latest actions have.
My first thought was, cry me a river. So many possibilities for him even as No. 2, but all he chose in the end is bitterness and resentment. And of course, none of this is his fault. I hope that people will see through this cheap attempt to make money of a status he seems to despise so much yet desperately clings on.
I understand the title in a different way. "Spare" for me means that he was born into a system where the positions are fixed by birth and no matter what you can do or not, nothing will change that. The "spare" is supplied with a position including housing, an appanage, servants because his existence offers the system security, He is important as long as he is needed but his value decreases once the heir has his own heir.
We have to wait what Harry has to say about that position, how he experienced it growing up and how it happened that he felt that the position offered within the Royal House was not how he wanted to live his life. There are so many open questions here (at least for me) and I look forward to read about that.
We've seen this question often in history when two princes close in age were raised but only the elder could become monarch. The "Spare" normally was the more interesting character because he had less inheritance/income, but more chances to deal with his position. Think Leopold of SCG, who planned to live as prince consort to the British queen Charlotte, but became a widower and then a king in his own right. His nephew Albert, who exchange the position to be the man behind his brother for the position to be man behind his wife the Queen. Philippe d'Orleans, brother of Louis XIV., who was blocked by his brother from helping him rule France, so became a lover of men and women and showed off his lifestyle.
But what were the chances for a modern-day spare? Joachim of Denmark's example is not really helpful, right? And Albert of Belgium only became king because his brother died childless. Carl XVI Gustaf did not have a spare, so prince Bertil could not marry his love Lilian. Don't start talking about Caroline of Monaco!
Yes, compared to a normal commoner, the spares are all privileged. They have the life in a gilded cage on being always second layed out before them when they are born. Some, as Albert of Belgium shows, even become king at an old age. But I don't see much evidence that such a life is good for all of these princes and princesses. Some cope, some create scandals and Harry left his family and his momeland he fought for as a soldier to go to life in a country where he can use what he was born with and what he learned to create his new life.
I just hope to find out more abouzt how life as the spare was for him, how much influence his family had against the institution of the monarchy, aka "the firm", how much effort was put into helping him make something to be proud of his life and how much pressure was put on him to just stick to the rules. What meeting Meghan changed for him, what she offered, what he took and what really happened according to him to make up his mind to leave the RF. How much it cost him to come back for his grandparent's funerals, how his relationship with his father changed, how much or little understanding is there for him.
That's why I'm going to read "Spare". I don't care much about the "truth" because I'M not in a position to know what is the truth after all, but I want to get a feeling for the person Harry is and how he tells his lifestory in a certain way.
And I think (or hope) that after "Spare" he can finally let loose of th life he decided against and look forward to live his new life together with his wife and children in the US and when he feels he needs to write another autobiography in maybe 20 years, he won't feel he has to redo the old one but will write one about a life of a man raised as a prince in the US. That sounds equally fascinating to me.