This article is about last year’s performance, not this year’s. Just FYI.

I’ve never tried it, but there appear to be some rsync apps on f-droid, you could try.

Wow, what a short-sighted view. Android, despite its many shortcomings, gives you orders of magnitude more freedom in almost every way imaginable. And none of its shortcomings are blocking you from using it, rather more or less annoy you.