I'd hypothesise that people doing small web kind of blogs just don't find GenAI interesting. They're doing things instead of trying to make LLMs do things.
I think that's a good hypothesis. Also, the main thing that sites are using genAI for is to reduce the cost of production. Small sites are more usually labors of love, where cost of production isn't really a very important factor.
Thank goodness for the small web, and hopefully it still stays relatively slop-free.