You might want to read that linked statement again. The BSI criticizes the sensationalist wording and generalization ("bad for all users") in the Die Zeit story, but emphasizes the key point that it's unacceptable for critical infrastructures to give up full control over your own systems by being forced to use TPM 2.0.

The story seems to be from leaked internal documents. Haven't we learned better over the past 2 months than trusting the "official statements" afterwards, that inevitably deny it whether it's true or not?

At the very least, I think this deserves more exploring. It's not the first time I saw the Germans weren't happy with Windows 8 and its "secure boot". This is from last November:

http://www.linuxbsdos.com/2012/11/21/german-govt-comes-out-a...

And it seems the source for that is your source. So are they contradicting themselves now?

http://www.bmi.bund.de/SharedDocs/Downloads/DE/Themen/OED_Ve...

Those are different sources. BMI = "Bundesministerium des Inneren", interior ministry. BSI = "Bundesamt für Sicherheit in der Informationstechnik", federal office of IT security. And they are not contradicting themselves. The statement they just issued reiterated Windows 8 is not safe for government and critical infrastructures.