Pangram thinks it's a mix, with around 40% of the text being AI. This was sort of my feeling about it even before running it through a checker, that a human wrote or rewrote some segments but others do feel distinctly high in perplexity and were potentially written by AI.
https://www.pangram.com/history/c150e3e0-7173-4cbb-9b38-41dc...
That being said, does it really matter? It comes off as bad writing. The mixed metaphors are hard to follow and detract from the point.