I also think the effect of this is absurd, but the logic is sound and it is unlikely it will change. ICANN is illegally collecting protected data when requirin

I also think the effect of this is absurd, but the logic is sound and it is unlikely it will change. ICANN is illegally collecting protected data when requiring personal data for WHOIS without having any reason to do so, and that's the problem here, the conflict. But in the impressum, it is you that is releasing data, not someone collecting, and that is not conflicting with the DSGVO. Maybe it would be possible to argue that Germany is collection that data de facto, or that it is illegally enabling illegal data collection by third parties, and suing the country for that in an EU court. But that is not a winnable fight, they'd argue that they are not collecting the data, and that there is a valid reason to force the release of the data.