I think the similarity comes from the literal meaning of the two but doesn’t extend beyond that. “Memento Mori” carries a distinctly humble meaning related to the concept of “vanitas”, the idea that death is inevitable, even for the rich and powerful, and that earthly pleasures are vain and meaningless. That’s really in the opposite direction of YOLO.
That’s hilarious. I just love how AI is basically like a 6-year-old who weaves his favorite new expressions into everything without fully understanding what they mean.