@stux
I thought about this case.
1. As others noted: they didn't cite any broken law or offending text. Without any of this, IMHO Hetzner should just drop such a complaint.
2. As @Bellingcat is clearly a journalistic account, they have the protection of Art 5 GG. Even if you're not from Germany, Hetzer is and therefore this applies. Yes, this is meant for the state, but it should be applied to companies as well.
3. Ping some German journalists to push it to the general public.