Historically the "Pro" in the MacBook line has referred to a device that is optimized for professional computer work. A journalist can certainly _be_ a "professional" and use their computer to get work done without requiring anything beyond a glorified tablet.

The kind of device required for a video rendering, database engineering, software development, or some other _computer_ based profession is inherently different and has stricter requirements on the capability of the device beyond mere portability and being able to pause Spotify with dynamic function keys.