I think if any sentient extraterrestrial watched Tampopo they would know absolutely everything they need to know about humanity. whether they decided to remain in contact after that point is anyone's guess but they would be making the decision with total and complete knowledge
"Look, it's a deeply symbolic act in Human culture! If we want to demonstrate our willingness to connect with them, we need to be prepared!"
"I'm not disputing that, but I don't think a Drift Symbiont and a paracyst are valid substitutes for their ritual artifacts! We'd be making a mockery of their traditions!"
"Were you two even watching the same Cultural Dossier? It's clearly an Accession Rite for a warrior on the eve of battle, administered by the Death Officiant who will bear witness to their passing!"
"Look, I keep telling you, Humans are an advanced culture who've transcended our primitive modes of conflict! They resolve their political disputes through the preparation and consumption of Ra-Men, not through acts of violence and killing!"
"Absolutely! That's exactly why we should let them provide the Prawn and the Egg, rather than insulting them with our crude imitations!"
[...]

