Harry's ghostwriter tweeted this from the Prince Of Wails.
He and everyone else should read the work of Elizabeth Loftus on the science of memory.
Basically, anything you remember that cannot be corroborated in an independent way should be treated in a sceptical manner. That corroboration can come through relatives, newspaper articles, photos and so on. But it has to be independent of the person, in this case Harry himself.
Given this and the lies, misrepresentations and distortions the Sussexes have been caught in, nobody should be taking a word they say at face value.
What you believe about your life is NOT on the same level as objective facts and evidence. Nowhere near.