Petite Abeille commented on issue #4 at Gemini Specification / Gemini text

Petite Abeille
2021-03-05T09:22:00Z

Also the 'inaccessible' straw man is a bit bogus.

In practice, links are displayed using their textual description, rarely 'raw'. This degrades pretty well: a mainstream Gemini agent tend to display unknown URI schemas as opaque labels. Not much of an impediment.

Furthermore, this is already supported today, through the magic of MAILCAP, which enables to register specific MIME handlers as one sees fit — an extension mechanism which some user-agents support out-of-the box, today.

Not to mention that most user-agents are open source to start with: a small matter of programming to tailor them to one's needs.