Most people […] write […] comments […] and hope AI picks them up

Really quite sad if there’s even one person out there doing that.

This is also as much of a grift as any SEO that claims to have cracked the code of getting to the top of results. Even if they have figured something reproducible, it will get fixed. If someone can manipulate a search engine to provide results different to what it would otherwise do, that’s a bug they will fix