No, it's named for Nelson Mandela. Because when he died people falsely thought they remembered him dying a couple of decades before. But they likely conflated his release from prison with his death.
Bena, the post you are responding to was joking. "It always was something different" - gaslighting - is the entire point of the Mandela Effect.
And well done, GP: I laughed outloud!
While possible, it’s also entirely likely that he was mistaken.
And it’s a reasonable mistake, so that’s why I provided the context of the origin and didn’t try to shame him for not knowing.