If you approach that question as a developer, it makes sense. Why not just restrict yourself to a subset of HTML+HTTP, which is what many people do.

However, as a user, I can't be sure what's behind each URL. Does communitywiki.org require JavaScript? Do they set cookies? Do they violate my privacy with telemetry and analytics?

If I see a gemini:// link, I know the answers to all of those questions -- they don't because they can't, not because they choose not to.