The continuing work on the language and its performance is impressive, but Ruby (and Rails) themselves have the honour of being stable, tried-and-tested solutions for rapid application development. Is it as exciting as the latest and greatest serverless lambda framework in Typescript? Not really. Is it a dependable workhorse? Absolutely.
At some point you might be successful enough to justify a rewrite into something else, but a simple Rails app will take you a long way with little effort.