You're describing exactly how all these web tools worked. "HTML, CSS, and JS are too hard to do manually. Here's a shiny new tool that abstracts all that away and lets you get right to making your site!" Except they all added additional headaches, security concerns, and failed to fill in edge cases, so you still need to know how to do all that HTML, CSS, and JS anyway. That's exactly how LLM generated code works now. It'll be useful and common for a while and then the technical debt will pile up and pile up and eventually everyone will look around and think "what the hell were we thinking" and tear it all down.