Ask HN: If HTML supersedes Markdown fr AI, Will it be versatile enough for devs?

Isn't Markdown's hallmark its versatility while performant? I see there is an increasing call from tech community towards HTML to be adopted instead of Markdown due to its richness in the agentic communication layer. But is it versatile across any kind of interfaces? versatile with different format conversions? and performant (as the md is lightweight)?