Honestly you could just come up with a basic wireframe in any design software (MS paint would work) and a screen shot of a website with a design you like and tell it "apply the aesthetic from the website in this screenshot to the wireframe" and it would probably get 80% (probably more) of the way there. Something that would have taken me more than a day in the past.
I have never once seen this actually work in a way that produces a product I would use. People keep claiming these one-shot (or nearly one-shot) successes, but in the mean time I ask it to modify a simple CSS rule and it rewrites the enter file, breaks the site, and then can't seem to figure out what it did wrong.
It's kind of telling that the number of apps on Apple's app store has been decreasing in recent years. Same thing on the Android store too. Where are the successful insta-apps? I really don't believe it's happening.
https://www.appbrain.com/stats/number-of-android-apps
I've recently tried using all of the popular LLMs to generate DSP code in C++ and it's utterly terrible at it, to the point that it almost never even makes it through compilation and linking.
Can you show me the library of apps you've launched in the last few years? Surely you've made at least a few million in revenue with the ease with which you are able to launch products.
I've been in web design since images were first introduced to browsers and modern designs for the majority of sites are more templated than ever. AI can already generate inspiration, prototypes and designs that go a long way to matching these, then juice them with transitions/animations or whatever else you might want.
The other day I tested an AI by giving it a folder of images, each named to describe the content/use/proportions (e.g., drone-overview-hero-landscape.jpg), told it the site it was redesigning, and it did a very serviceable job that would match at least a cheap designer. On the first run, in a few seconds and with a very basic prompt. Obviously with a different AI, it could understand the image contents and skip that step easily enough.