Ray has been thinking about this stuff for thirty years. He has a knack for getting positive press, which goes back to his time in high school.
His ideas reveal the narrowness of his experience in the world: it appears that he has only the vaguest notions of what the lives of most humans currently on the planet are actually like.
If he understood humanity beyond the confines of Silicon Valley / Route 128 / Davos, he might spend more of his time applying his alleged genius to actual problems which might admit actual solutions.
His fantasy about living forever bespeaks a deep-seated emotional and psychological immaturity.
His idea that we could have life without death is not unlike imagining a world of sunlight but no shadows.