I listened to his podcast on Pragmatic Engineer. I don't think he specifically addressed what it solved, but he talked about shifting the Overton window in regards to what's possible with AI agents. I'm not arguing that he actually accomplishes this -- just noting that his goal seems to be less "create something useful" and more so "create something that gets people's attention and maybe gets them to thinking about AI in a different way".

Cynically, he published a book on vibe coding recently, so he may just be grabbing attention as some effort to boost book sales.