Authorability is a key contributor to the success of the JAMstack. Despite the JAMstack's superior performance in speed and relative cost over other methodologies, the mass adoption of the JAMstack hinges on its ability to operate in a cross functional team where not everyone is technical.
Content today is incredibly advanced. Thanks to the growing popularity of visual storytelling where text is combined with interactive visuals and compelling graphics, content authors must deliver stunning content experiences to keep users engaged. This entails authoring content that seamlessly blends text with different forms of media like charts and images. In the realm of the JAMstack where raw content is generally represented as markdown, authoring such "rich experiences" is a challenge. This is largely because content is decoupled from code in a typical JAMstack setup and there is huge disparity between how content is created and how content is displayed.
The tablestakes for a rich content experience on the JAMstack is high.
Only with developments in authoring can the JAMstack become the defactor standard for modern web development. For more on MDX as a rich content experience, check out this fantastic talk by Josh Dzielak at JAMstack conf London