[thih9]

Risking stating the obvious, the linked issue[1] seems appropriate for stack overflow, but not a good fit for github.

It would have been a good github issue if there were no instructions in the project. If the instructions are too difficult, then write how you would improve them. If steps are missing or incorrect, report that. Otherwise post to stack overflow.

Both: closing the github issue or treating it as an incomplete bug report seems fine to me. The maintainers are doing the latter, I’d say this is a good response.

[1]: https://github.com/tukaani-project/xz/issues/121