Are you seriously arguing that every open source project needs to anticipate every single way any of their users might use their software in the future, and also any future change they might want to make to the software, and write up a doc of disclaimers and caveats?

This is ridiculous. The amount of entitlement I'm reading here is gross. This is how you burn out maintainers and drive them away from open source.

> Your downstream should be precious.

No. Every open source maintainer is free to decide for themselves how much or how little they are willing to bend over backward for the sake of serving all possible user needs. If you don't like that, then feel free to build whatever you need yourself, from scratch.