Wait how is "The URL is the app" LLM-speak? Genuine question, sounded fine to me when I read it, not sure what a better way to phrase it would be
“The [A] is the [B]” (and variations with “the” replaced with “your”) is screaming LLM to me. It’s been used by real people too, but it sounds very corporate, and is not something I’ve seen used to describe a personal project before LLMs.
It's LLM speak because it's wrong, but pithy. The app is the app, and it lives on the server. The URL just contains the content of the sign.