It took him a year to build. So yeah, obviously if someone spends a year working on something with an LLM they can produce a good product.
The slop we're seeing from people using AI is because they pump it out in a month or two and then call it a day.
The big question is: how do we tell the difference?
If 99.9% of LLM-smelling projects is vibecoded garbage, why should anyone assume that your LLM-smelling project is the 0.1%? If I spend all day digging through dogshit to find the one diamond, I'll just end up going home empty-handed smelling of dogshit.
AI tells are a giant red flag indicating to potential users not to waste time on it. Want people to take your new pet project seriously? Don't use AI! And yes, that does include even the genius 100x engineers who can use LLMs responsibly.