@prologic@twtxt.net He didn’t like LibreOffice Writer? Is he used to Microsoft Word or Apple Pages? I’ve had success getting non-technical Office refugees on LibreOffice, specifically Writer. Most people don’t need any fancy features and most things are located close enough to their counterparts on Word.
I show them how to export their documents as PDF before they share them with others and I use the (somewhat) immutability of PDFs and their portability (bundled fonts, rigid formatting, etc) to sell it. Those are two real benefits, but the main reason is that I don’t trust other software to handle ODTs and I don’t trust LibreOffice to write DOCXes. Although, I don’t know if I really need to be worried about either of them with basic documents. It’s probably worth investigating.