^pretty much everything you mentioned^ thats not even mentioning the impact he had on Napoli and the whole city there.
Also the World cup was the crown for Diegos career, but he was already considered the worlds undisputable best player at that time, not based on stats but the full range of his abilities and by basically being a "prototype" in comparison to other players at that time.
Dude was just way ahead in so many levels and on a different planet.
Players like Maradona, Ronaldinho, Zidane, R9, Pele etc were pioneers and revolutionary in so many ways and reducing a Goat debate to a pure stats contest is a lazy way of skipping past important factors like :
degree of difficulty, team strength, historical importance , positioning on the field (comparing goals scored between a striker and a midfielder for example is just stupid) influence, leadership capabilites, how complete the player is etc and the list goes on. There are a lot of things to consider.
Anyways, this debate is never going to end and will always be discussed, but saying "anything else but Ronaldo or Messi is Nostalgia" and basing that statement purely on a certain stat is ignorant imo