The slop can come from anywhere, including captive apps like Pinterest, so why use Pinterest? The ask is: how can you get a similar experience on non tech controlled systems? That does not mean you won't get slop, it means that Pinterest is not the gatekeeper to the user experience. There will likely be slop, but that is a distinct problem statement to solve for.

My concern is the gatekeeper (in this case, Pinterest), and avoiding them at all costs using the ability to build replacements swiftly using vibe coding on open protocols (although vibe coding is not required of course, it will simply speed time to market). ATProto cannot be controlled by design, so it is ideal for building apps that need social rails (as a Pinterest replacement might). What is Pinterest besides an app, a search engine, and an object storage system after all?

Tangentially, ATProto moderation primitives might be of use in detecting, tagging, and filtering AI slop (via media, metadata, and author/publisher signal), but more research is required on this topic.