The author did not compare against the findability of other articles which aren't about net neutrality. So his conclusion that it's about the content of his article isn't supported by his analysis.
What does it even mean to conduct a sampling of "findability" within a system whose results depend on when you search, who you are, where you search from, and the subject on which you're searching? We're way beyond Schrodinger's cat level of uncertainty with these non-deterministic systems and their hidden actors explicitly manipulating the results (as "guardrails", "moderation", whatever).
Search (and AI) is a principal agent problem and there are insoluble trust issues around information technology today that make a "scientific" approach rather naive.
Why that made up pronoun?
I can see why commenter wouldn't call author 'him'. Why would anyone bother to track authors gender if it's irrelevant for the topic?
Pedantically, all words are made up. I'd assume GP is using it because they see utility in a unambiguously-singular gender-nonspecific pronoun, opposed to the more widespread but somewhat ambiguous singular "they".
Especially when there is an established gender neutral pronoun: they