Domain‑specific dev tools beat general ones because the latter never saw "domain" data.

LLMs did - they soaked up the entire public Python, JS, React universe during pre‑training.

So the marginal value of a “React‑only” model is thin.

I agree that bigger wins come from better retrieval, tool feedback loops, and planning on top of a powerful general model whose weights already contain some of today’s front‑end ecosystem's spine.