Sometimes I question myself if people posting these "a junior dev can build this product" haven't really worked with systems at scale and all of the myriad of issues that scale brings or if they are being the usual hyper-optimistic-dev that isn't considering much past the proof-of-concept point of a product.
Either way is quite baffling how common this kind of comment is, almost a decade reading Hacker News and it pops up constantly.
