lol it is working. Thanks guys! The project I linked above lets you access files via Storage Framework (e.g. your file manager) and change remote files. I hope that other apps will work too (termux, orgzly etc.) Hopefully no major bugs will crop out.
It seems like a recent project, so I'll try to spread the news.
It was soo much easier than trying to piece it together in termux with cron and bisync.
Things you can do if you just know the right keyword.