But all those are just extensions using the established frameworks and development practices for that backend application. Once those are developed, it’s pretty

But all those are just extensions using the established frameworks and development practices for that backend application. Once those are developed, it’s pretty easy to add new features. I would argue using Ruby and Python like script languages brings no significant benefit in development time. In fact they make it worse when working on an existing app, with the extra unit tests, difficulty in refactoring, and extra performance work.