The Ontological Argument - valid or debunked?

[madog]

'Maximal greatness' is subjective because 'greatness' is subjective. What do you mean by greatness? Size, shape, everything? How do you measure greatness? How could you know if it exists? How could you confirm it? What evidence is there? What if your definition of greatness differs from other people? This is just a total non-starter.

Omnipotence, omniscience, morally perfect for starters. Opinions about greatness are beliefs. We are not talking about beliefs. You miss the point that even if we do no know every detail, that does not mean that maximal greatness does not exist.

No you miss the point ... even if we know every detail does not mean it does not exist