In reply to Jimmy Smutek.

I understand your frustration at there not yet being a definitive answer on the React question, but it's worth noting that the effort to move Gutenberg away from React (should that be necessary) will be greatly reduced by the existing architecture. Gutenberg blocks don't implement React elements, they implement WordPress elements.

Currently, the WordPress element library is a thin layer around React, but it could be transitioned to a completely different library if needed.