Even outside of SPA apps and new magic, Rails is still faster to develop a prototype or website in than React or dare I say any modern SPA tools.

We tested this for fun with some very experienced React and Rails devs at our company, each starting from a freshly formatted laptop to include the time it takes to get an environment up. Requirement was to create a simple blogging site with comments, authors, and tags (with some upfront design). Rails hands-down took the cake, by a large margin, each time.

It was for fun obviously, not exactly scientific, but was pretty eye opening seeing how much further ahead the Rails devs were at each step.