I read the first paragraph or two, but then I stopped for two reasons:
A) searching using BM25 and via vector embeddings are two different methods of search; both have their uses, many practical use cases benefit from having both. The search method is independent of who calls it when, i.e. whether you just have a static pipeline, or a dynamic one where the search tool calls them.
B) you're describing the static pipeline as if it were SOTA. We dropped that well over a year ago IIRC. There might still be cases where that is good enough, but in general, agentic search has pretty much become the default since LLMs became reasonably good at tool calling.
A) searching using BM25 and via vector embeddings are two different methods of search; both have their uses, many practical use cases benefit from having both. The search method is independent of who calls it when, i.e. whether you just have a static pipeline, or a dynamic one where the search tool calls them.
B) you're describing the static pipeline as if it were SOTA. We dropped that well over a year ago IIRC. There might still be cases where that is good enough, but in general, agentic search has pretty much become the default since LLMs became reasonably good at tool calling.