Can confirm. With a setup that works offline, one can

- start small on a laptop. Going through procurement at companies is a pain

- test things in CI reliably. Outages don’t break builds

- transition from laptop scale to web scale easily with the same API with just a different backend

Otherwise it’s really hard to justify not using S3 vectors here

The current dev experience is to start with faiss for PoCs, move to pgvector and then something heavy duty like one of the Lucene wrappers.