I seem to recall coming across a glossary that had something to the effect of,

mutual recursion - see recursion, mutual

recursion, mutual - see mutual recursion

Yep, checks out to me.

The fact that someone else fixed the issue doesn’t really excuse the absolutely unacceptable original response to a very reasonable request.

I’m much more interested in seeing an apology, or any sort of indication that the dev understands how disrespectful they were.