Yeah, the “Age of Heroes” was just Ancient Aliens for the Greeks: “we can’t do it, so it can’t be human work”
Exactly, it wasn’t some view to the past as the root of great culture.
If you read the actual Polybius you’ll see that there was no ideas of evolution or that we’re in the same category as other living things
Heinrich Schliemann was probably the first to connect the myths with tangible proof through archeology in late 19th century. While Lévi-Strauss work was much later and more political and polemical rather than scientific.