It goes on a bit and I gave up reading after a while but the gist for techies is probably that whatever algorithm/process Google is using to flag non-ad friendly posts isn't smart enough to distinguished someone talking critically about RFK's anti-vaccination stance and an actual anti-vaccination article.
The author seems surprised to be dinged by a shoddy automated system. Is that really such a rare experience? Makes me write him off as a kook trying to make hay of a shitty bit of automation, but he may just genuinely expect Google to have thoroughly reviewed his site before firing off a demonitisation warning.
Secondly, NC has been sounding the alarm on SV's penchant for automated systems with no human recourse for years in other contexts, and are now finally running afoul of it themselves.