I've been with fly.io at small scale and I have always loved their approach to content (docs, blogs, forums), and needless to say, their product. They are very talented and are building something truly great. Their openness, shown in this post, is an example to follow. It's very hard to be that honest and direct when you're meant to be an infallible entity, but it's not a surprise at all to see fly authoring such a post. That's how they operate and that's why I trust them over anyone else.