> If you could actually detect AI content with high accuracy, you would sell it as a service and print money,

What an inane comment. Much like LLMs are completely incapable of replacing me in software development, they are likewise completely incapable of replacing a human's ability to detect LLM-generated output. It is absolutely possible for a human to build sufficient heuristics to detect it, and it is not possible to automate this process in such a way that it can be sold as a service. The idea that everything can be automated and that human skills are irrelevant is a complete farce which is easily disproven by the fact that even the frontier "AI" labs are still relying on human labour and producing eg. Electron to provide a chat GUI in a desktop application.