But this seems to be about Kiwix (which in short is "offline Wikipedia" in various ways) and doesn't seem to be about questionable content in any way.
Eventually I guess we'll get Hetzner's perspective on this, as they tend to start writing publicly about issues once the other side starts writing publicly about it as well.
Personally I've been a happy user of Hetzner for many years, with no issues that weren't my own doing. But reading about people having their servers deleted in the middle of the night on a Sunday (Berlin time) and all data wiped immediately, with no recurse, does sound a bit aggressive. Luckily it seems like both me and Kiwix has mirrors for the data we care about.