I don't think the post was written by AI.
It has headers like AI blogposts, and features a lot of parallel structure like AI blogposts ("there's no <blank>. you <blank>"), but if you actually read it none of it reads like slop. To me anyway.
It reads like autism to me. The theme confirms that.
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Interestingly, Pangram says that exactly the first 50% is AI and the second half is not. ¯\_(ツ)_/¯