Your comment contradicts itself. A facebook e.V. with a strict data safety policy would be nothing more than another organisation running something similar to diaspora.
I don't think it's necessarily a contradiction. You either have to run your own server, or you have to trust someone else at which point you might as well just use Facebook. The entire point of Disaspora is that you don't have to trust anyone. Once you have some random, unknown person hosting it for you, you're just using Facebook but with fewer people.
That's what https://framasoft.org is doing. They have a https://degooglisons-internet.org/ project (degooglify the internet) and are providing alternatives to every big corporate services out there. https://framasphere.org is their installation of diaspora* built against facebook. And they are non-profit. (You can switch the language to english if you do not speak french)