HRH The Duchess of Sussex has the right to use and feel about her own DNA in any way she sees fit. If other people find value in HRH The Duchess of Sussex's DNA enough to engage with her because of it, that's their right.
Several Nigerians felt kinship with HRH The Duchess of Sussex because of her 43% Nigerian ancestry. They didn't ask her what tribe she belong to or whether her DNA was accurate: they accepted it for what it was without putting any ulterior motives on it.
Many have said that being Nigerian is more than DNA (especially since DNA can be inaccurate due to records on the ancestors of those of the African diaspora not being as well-kept): it's tribes, culture, history, family, and more that can only be experienced by those born in Nigeria or their close relatives born in different countries. All of this is accurate and valid.
But several Nigerians felt connected to HRH The Duchess of Sussex through a shared heritage. Are their feelings about their own heritage and that connection less valid because it's built off of love and companionship for HRH The Duchess of Sussex rather than apathy, mockery, or scorn?
If people feel a connection to Meghan based off DNA- fine. Nothing wrong with that. I don’t particularly care one way or another.
And, of course, Meghan can do (and feel) what she wants. And she does.
But- I’m cynical about Meghan. And imo she’s earned it. I don’t take what she says simply at face value. And I don’t believe I have a reason to give her the benefit of the doubt that I once gave her.