[imiric]

I'm not sure why you were downvoted. You're right that buffers and everything being programmable makes Emacs an ideal choice for building an AI-first editor. Whether that's something that a typical Emacs user wants is a separate issue, but someone could certainly build a polished experience if they had the resources and motivation. Essentially every Emacs setup is someone's custom editor, and AI features are not different from any other customization.