I don't think it was irresponsible to publish it, but I do think it was irresponsible to publish it without clearly disclosing at the top of the crates.io README that it was built entirely by AI, and that you haven't reviewed the code (assuming you haven't).

If I were looking for an XML parser/generator library, I might stumble across this and think it might be production-quality, and assume it was built by humans, or at least that humans had fully vetted and understand the code.