How long it takes for a seasoned developer to write a full app with database design, full authentication register/login/logout/forgot/session, basic crud for all entities, payment processing, admin dashboard with analytics, recent users, transactions, moderation, etc

Usually from 1 to 3 months

Now it all can be developed in just 5 mins, add cosmetic changes in just 24 hours and you have a fully functioning app already deployed in production

So if that doesn't make you a 10X developer you are not using enough AI