If done right you couldn’t tell either way, and you probably wouldn’t care. The point of writing is to get a message out to the reader as efficiently as possible, don’t waste their time. The writer ensures that, AI is just a tool at that point. The problem with vibe writing with AI is that AI has no sense about wasting the reader’s time.

We should just be judging writing by its quality. There were always bad writers who wrote like LLMs or worse. It takes a lot of practice to write well.