Here is an approach to filtering LLM written content: https://hnslop.nilsherzig.com/

Instead of filtering keywords this ranks the content using Pangram. But it's also pretty effective at filtering content about AI. Turns out that a lot of LLM tooling projects have LLM written project descriptions/blog posts.

It's amazing to see how many of the "AI hurts my brain" posts are apparently written by an LLM.