"Gen Z buying iPods and people buying N64 games again is not evidence of the monoculture breaking apart - it's a retreat into the past for the enlightened few because their needs are not being met by modern goods and services."

That seems like a charitable interpretation to me. Maybe it's just a retro fashion trend that is even at its peak a tiny blip in the market, like back in the 90s when bell bottoms were "in". Give it a few years and we'll see.