I feel like we're passing the peak of a vector db hype cycle, where its increasingly clear its one retrieval strategy next to full-text search strategies. I constantly talk to people trying to build RAG and they realize they need a full-text search solution, and a number of strategies, VERY dependent on the task you want your chat system to accomplish.
It's important we get through the trough of disillusionment quickly. There's a lot of market education needed to know when they're truly needed.