@erincandescent @james I think acknowledging that they expect there to be COVID instances is reasonable - it would be absolutely ludicrous to suggest otherwise.
As for the masking recommendation, yeah, I agree, I think this does say a lot about the team. I don't think enforcement is practical (or reasonable given current practises in Germany) but I do think they should be advising that you bring masks and use them in the halls, as well as providing free ones.