that concept of technological ages is kinda BS anyway
but for real, human history is like Mid Seier’s Civilization and once a technology is unlocked it will now be used in every city forever until the next one is researched. and our stories should also be like this.
yeah it’s pretty silly to connect a “serious” fantasy world with the “real” world, but most creation myths take place in a fantasy world but has a direct lineage (via mythological rulers -> semi-mythological -> real rulers etc) to actual history. i guess that’s what he was trying to do?