To be clear, not only is the package in question not "missing short options, prompting for options and using environment variables for options", there is not even the slightest indication on its docs site that it might be missing such features.

I'm not harmed by the reckless indifference of that comment, because I know a decent amount about these libraries, and it's not my business if people want to self-harm by believing false things, but people scrolling the thread are potentially harmed ("damn, I like the syntax of this, but it doesn't support short options?").