> I get all these developer-focused, SEO-optimized blogs that are kind of helpful but often not, and I have to scroll all the way down to get the official docs. I really wonder if that has to do with AI-generated content becoming more ubiquitous

No. There's a cottage industry of content writers that just churn out this stuff by the bucket.

I have tried to hire writers in the past that should've been niche experts but just regurgitated content like this, and had SEO experts trying to convince me that we should actually aim for low quality because higher-quality articles will be too dense for people. (both contractors got the boot and the "content" went into the bin)