If you are looking for a specific written essay inside that file, it may be a README or a developer manifesto included by whoever packaged the leak. Otherwise, the "interesting essay" likely refers to the created by the gaming community using this data as evidence.
While the archive is primarily technical, it became a point of interest for "essays" and deep-dives because it serves as a post-mortem for one of the most high-profile gaming failures in recent years. Analysts and enthusiasts use the contents of such files to write about: File: release1-22.7z ...
Internal notes or file structures that suggest a chaotic work environment. If you are looking for a specific written
Comparing the leaked code to the original trailers to see if the promised features ever actually existed. Analysts and enthusiasts use the contents of such
Evidence of whether the game was built primarily from pre-made Unreal Engine marketplace assets.