She claims he went by Soetoro when he was in high school. Not true. He even signed the sidewalk at Punahou:
She's making it up to get attention. Where was she in 2008?
And she remembers Obama's mother‽ Really? How often did she take a break from the Third World to visit her son in Honolulu?
Knowing it was a Barry landmark, with the contemporaneous-vintage cement of the 'KING' inscription containing 'SOETORO', perhaps a later scribe harmonized to later history, replacing the lower cement and making it as shown. OTOH, maybe it's all Photoshopped.
The handwriting of the two different lines looks unconvincingly to have come from the same hand. Isn't Barry left-handed? The lower looks to have been scribed by a right-handed person, as it's more orthogonal, while the 'N' in the first line does seem to be a 'lefty-ism'. The first line is also more rightward-leaning, as one would expect from a 'lefty'.
With all that said, the 'KING' idea is fairly convincing that Soetoro would have wanted it that way, chiseled on our backs in 'stone'.
HF