This article is really about the versatility and reliability of postgres.
And I'm all in agreement.
Reminiscent of:
https://www.craigkerstiens.com/2017/04/30/why-postgres-five-...
https://webapp.io/blog/postgres-is-the-answer/
http://rachbelaid.com/postgres-full-text-search-is-good-enou...
As much as HN could lead you astray with the hype of this and that tech, articles like the above are some of the most consistently upvoted on this website.