I think as an alternative to the http/WorldWideWeb, Gemini or similar protocol is a great idea, but the markup should be a bit more extensive so people can really use it in a practical way, e.g. with emphasis (bold, italic) and inline links. Images (possibly audio with a size limit also), which would not need to be allowed inline, but should (optionally) be rendered on the same page with the text between lines where the link is, as some Gemini browsers can do but is not required in the specs.

But the most important things are 1) that it does not allow any kind of javascript or other code execution, and 2) it stays simple enough for anyone to be able to create their pages easily, for programmers to create simple, smallish browsers to render the pages, and keep that low bandwidth, so it could even be used on a mesh network (a browser for a mesh or other very low-bandwidth network could ignore media files).

Unfortunately I don't know how it could be protected from AI any more than the normal Web can.