Another advantage to plain text files: source control. You can check your writing into git and get a history of all your edits. It’s something programmers take for granted, but it would be amazing if this got more widely adopted outside of tech. The number of files with names like “Report Final Final draft v3.docx” is truly staggering. “Git for everything“ would be a multi-billion dollar startup easily.
From what I've read, Pijul should fix at least the problem of needing to resolve the same conflicts multiple times over and over again. However, I feel that version control focused on text breaks, because the merging algorithm doesn't know anything about the semantics of what's represented in text. So yes, I'd say that version control in more areas would be nice, but one based on binary formats understood by version control. One glimpse of that may be KeePassXC, which can merge password databases and has never done it wrong in my experience.