features in this nextjs app router version 13: 1)File based routing 2)Client and server components 3)Server side rendering 4)Client side rendering 5 )Backend api route handlers (controllers in node.js) 6)Mongodb and nodejs inside nextjs !!!!! 7)Dynamic routes
Why do you think that https://github.com/vercel/mongodb-starter is a good alternative to Next.js-app-router-with-next-auth