Comment by nicexe

Their ToS states that cryptocurrency mining is forbidden (which is fair). But, comments from hetzner officials on social media clarify that Ethereum nodes (even if they don't produce any blocks) are also against their ToS.

This is like mentioning in your rule-book that metal toothpicks are forbidden because I don't know, people can short your batteries or whatever. But also banning wooden toothpicks without mentioning this in your rule-book.

Their ToS are not always vague but the way their terms are executed is definitely arbitrary.