They did release the CLI which says to work on Linux. If you’re doing backups via scripts or otherwise then it might be a good stop gap.

I was going to look into uploading my backups there sometime this week. When I get a free moment to do so.

There’s a difference between privacy and anonymity. You can have privacy without anonymity. So, it’s about what you want out of the app. If you’re looking for anonymity then it’s not the app for you, and there are other apps that can do that better.