Just someone else trying to utilize currently existing intellectual property to enhance their own portfolio for a job opportunity.
It's the same shit that guy who is remaking Simpsons hit and run who never plans on releasing it
Edit: I clicked and he's definitely doing it for ad revenue and sponsorship opportunities
Just like how ToastedShoes did a pokemon PalWorld mod (that he also didn't release) but it got him viral attention to his channel from hundreds of gaming outlets