Small Web, Indie Web and Gemini are terminally missing the point. The web in the 90s was an ecosystem that attracted people because of experimentation with the medium, diversity of content and certain free-spirited social defaults. It also attracted attention because it was a new, exciting and rapidly expanding phenomenon. To create something equivalent right now you would need to capture those properties, rather then try to revive old visual styles and technology.
For a while I hoped that VR will become the new World Wide Web, but it was successfully torpedoed by the Metaverse initiative.
It's about capturing the noncommerciality, not the experimentation. Most of the small web sites are just blogs, a solved problem by now, but there's interesting content in many of them.
There's an element of nostalgia, certainly but it's also a reaction to the overwhelmingly commercial web. Why not build something instead of scrolling through brief videos interspersed with more and more ads that follow you everywhere?
Large companies have helped build the web but they've done at least as much, if not more, to help kill it.