Fable 5's UI/UX skills are genuinely impressive.
One of my clients has a few ancient apps they want to modernize. They're data-heavy. The UIs are "a product of their time," so to say.
The trouble is that they're afraid to adopt coding assistants. Lots of proprietary data. Huge amounts of risk in handing that data over to an AI company, or anybody. Risk for developers, too, of using tools that their organizations haven't approved.
But the reality is that there are acceptable, relatively safe ways to get the benefits of coding assistants, without allowing them direct access to your code, or your database.
I've talked with engineers who prompt LLMs around the problem, until they get something that can be mapped onto their real domain. Solutions that work on sample or synthetic data, that can easily be repurposed on real data. Apps that are difficult to modernize often have tangled up UI and data access, and their code is frequently, to use a technical term of art, spaghetti. Brittle, if you prefer. Using the fiction can get you to where you want to go, with most of the benefits of coding assistant workflows, without exposing any of it.
So I guess my message here isn't "trust the AI," but careful boundaries around the LLM and your actual confidential data/system can protect confidential information, you can use better tools, and get their benefits, even in a world where you can't use coding assistants quite yet.