If a project were treated as a single ZIP file, every single operation -- synchronization, backup, even routine saving -- would require uncompressing and recompressing the entire thing or, in the case of synchronization, transferring the whole thing across the internet. [...]
you can insert/extract individual files from a zip archive without uncompressing and recompressing the whole thing - this has been possible for *ages*
You know what, nevermind. I'll just enjoy macOS scrivener and try to forget about anything else.