alt Hacker NewsUnix CLI utilities have been all text for 50 years. Arguably that is why they are still relevant. Attempts to impose structured data on the paradigm like those in PowerShell have their adherents and can be powerful, but fail when the data doesn't fit the structure.
We see similar tendency toward the most general interfaces in "operator mode" and similar the-AI-uses-the-mouse-and-keyboard schemes. It's entirely possible for every application to provide a dedicated interface for AI use, but it turns out to be more powerful to teach the AI to understand the interfaces humans already use.
Yet the most popular platforms on the planet have people pointing a finger (or several) at a picture.
And the most popular media format on the planet is and will be (for the foreseeable future), video. Video is only limited by our capacity to produce enough of it at a decent quality, otherwise humanity is definitely not looking back fondly at BBSes and internet forums (and I say this as someone who loves forums).
GenAI will definitely need better UIs for the kind of universal adoption (think smartphone - 8/9 billion people).