I don't think it is accurate to call an open source software a "black hole". Everything is there for anyone to see in the source code.
However, I understand that the source code is not the best form of documentation for many Arduino users, including myself when it comes to the more complex ones. But when it comes to free open source software, you're likely to get your money's worth either way. If not, we can go looking for something better or make our own from scratch.
So if you wanted to vent, then I guess it's as you say: "THAT'S ALL. That's it", mission accomplished and I sympathize. But if you want help you should provide some more information. We need to know exactly which libraries you are using. There are thousands of Arduino libraries; often multiple with the same or similar names. So playing guessing games is not a very productive use of the helper's time.