I've seen people generate a lot of vibeslop with AI, but they didn't actually "Write entire applications using AI".

They still have absolutely no clue how it works, so how could they "write entire applications"? They vibed it, but they certainly didn't write any of it, not one bit of it, and they're clueless as to how to extend it, upgrade it, and maintain it so that the AI doesn't make it a bloated monstrosity of AI patches and fixes and workarounds that they simply could never begin to understand.

They were also following a dozen youtube tutorials step by step, so even that part was someone else doing the thinking.

Yeah, these are the same guys constantly bugging me to help them figure something out.