Something I've been thinking about for years, and fully expected to see earlier. Even though reasoning with LLMs is still largely broken, the "flag logical fallacies and cognitive biases" task feels like something trivially doable and much more appropriate than most of the stuff we're throwing at them.
If we'd regulate platforms away from walled gardens and towards open APIs, a tool like this could fix a lot of the problems with the internet without balkanizing it. The real use-case isn't slapping this thing on your blog, but using it with existing social media that will never, ever opt-in to anything that slightly empowers users. Browsing HN, reddit, or youtube comments armed with a simple checkbox that hides comments that are not information-dense? Yes please.