Don't know about Hetzner but Fly.io and SQLite (who now seem to sort of be intertwined in making SQLite Cool Again™) just have great content.
They tend to show up as submissions mostly when something bad happens (e.g. price increase), but they still show up in comments a lot when people discuss how comically expensive cloud providers are in a direct comparison and how you can be similarly effective running on such pricing-focused hosts, especially if you know how to build the redundancy yourself (or don't need it).