Author here. That's definitely my bad and not an intended user experience. The text was initially meant as a transcript accompanying presentation slides. I've compressed the images so it should be at least slightly better now.
The good news is that this already exists in the Redis search module [1], which allows you to do similarity search against indexed embeddings, among other features, and offers comparable performance against other ANN libraries [2], depending on your performance criteria.
I've been using it for a side project to do semantic search on books[3] and have been really happy with its performance. (Not affiliated with any of this, was mostly interested in exploring existing well-performing, fairly standard tools with low latency)