I feel like "building a simple website" has been a solved issue with templates for decades now. The only thing you need to add is the text, and for a useful website, you're already going to have to be typing 90% of that into the prompt anyway - most of what an LLM is going to add will be more of a value-subtract than a value-add.
Sure, that still leaves the tweaking and customization, but I feel like that's the part most people enjoy the most? Humans love decorating.
Maybe I'm seeing this the wrong way, and I'm forgetting truly non-technical folks exist, and this is for the people who would otherwise be forcing their nephew to help them make a basic website, and that's the role the LLM is playing here, as a conversational interface. I think the marketing copy for this announcement is total bullshit, then (plastering "AI" all over the announcement is more for marketers than customers), but I can at least see that use case.