In what sense? Germany has among the strongest judicial oversight for invasion of privacy in Europe. Due process is followed when securing search warrants that provide access to subscriber data (Germany does not have administrative subpoenas like in the US and other countries).
Former attempts at surveillance have been struck down in the Bundesverfassungsgericht, and the right to privacy has even been affirmed for foreigners (as opposed to other countries like the US that reserve that foreign nationals have zero due process rights for invasion of privacy).
Germany is an absolutely terrible choice for this. Other Email providers such as Tuta which also offer encrypted emails, were forced to install a backdoor. As soon as the police arrive, every future email sent to the account in question is copied unencrypted without the person being informed. This is much worse than passing on payment details or stored backup email addresses, as Proton Mail is required to do in Switzerland.
In the sense that it's a joke that caves in to the flimsiest pressure from a certain superpower. Although pressure is a bad choice, it's more like it's a wholy owned subsidy.
Germany has strong privacy protections against businesses. But not against the state as they consider themselves above suspicion.