It’s really not more productive.
Working with react has a higher barrier of entry (something which is becoming less true over time given that many templates etc exist for it), but if you want to be producing pages and functionality, a good react dev will run leagues around even an a exceptionally good jquery dev.
I’m solid at both and we are talking a dev cycle that is magnitudes faster once you are set up reasonably well. There’s a reason it’s popular. Typescript makes a lot of testing unnecessary and gives many guarantees on robustness. React makes it a breeze to create complex state full components. Nextjs makes it super easy to deploy all this to a web app and quickly create new pages.