The problem is when tools that are targeted for rapid development start getting used for large, mission-critical applications. The people using these tools professionally often are not the greatest engineers and you end up with a giant mess of an application using technology that is no longer supported. The company I currently work for is in this situation right now with Oracle Forms.
Going with your specific example of beginner web dev, the basic HTML site of today is Wordpress
Going with your specific example of beginner web dev, the basic HTML site of today is Wordpress