> DOCX is a terrible format though.

Agreed but it doesn't matter, because it is the de-facto standard.

(Personally, I think WordPerfect was the better doc standard, with visible attribute tags in the text that could be edited.)

> If you don't need to edit a document, PDF is more reliable.

Yes, but the reason you're using a word processor in the first place is because you need to edit the document.