Quite the contrary: the barrier to rolling your own <anything> was never lower.

As others have proclaimed: what matters is taste. And (perhaps?) a deep understanding of the subject matter. Which may or may not be encoded in formal specifications. But may also include 'fuzzy' domain-specific knowledge that can't be scraped from the web.

> Humans don't code anymore

I do, and I'm far from alone. Whether 'product' gains traction, that's another matter. But you know what? It doesn't matter. If it works for [author], that's enough.