Are you sure ? It would be faster than most electron based editors
Open .docx file, save as Markdown to nicely preserve things like headings, bold, etc. I moderately frequently have reason to want to go .docx to .md because I have a lot of ediing/rewriting to do and I'd rather work in Emacs than LibreOffice Writer.
How about opening Word documents and being able to save them to Markdown in one click? That's super useful to me.
To copy/paste LLM outputs with maintaining format.