This is patently false. I work at a medium-sized startup in Berlin, which is very international, with many of my colleagues speaking little German. We have recently created a Works Council (with support from the management) - and the council includes non-german speakers. It is certainly more work, as the work of the council involves a lot of german law - so training and documents need to be translated - however it is possible, and we have nothing even close to the resources of N26.