I use qdrant to store all sorts of datasets (wikipedia, podcasts, etc.), but even just hackernews is millions of documents and probably would not perform well without any sort of index.
"Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity." - https://news.ycombinator.com/newsguidelines.html
Occasionally linking to your work is fine, of course, where it's relevant, but it's important not to overdo it and to use HN for general curiosity, not promotion.