I'm the author. The reason is the first two papers were incomplete attempts at what this final work became. They did get attention, and I'm writing a paper with Garret Sobczyk a core aspect of this related to nilpotents and the fano plane. He approached me after reading those earlier papers.

I'm a nobody in terms of credentials, but I did find a unique approach that I think is worthy of a closer look. It does not use any of the typical angles with complex machinery like Hilbert Polya.