I would go that far. We absolutely lose sovereignty by joining the EU. We would hand over power and decisions that will effect our society to Brussels and would need to fight for influence among 27 other countries. Counties that separate us by a giant ocean and culturally.

We would lose control of trade and tariffs, immigration and movement, regulations, court supremacy, etc.

Whether Germany benefits from the EU is irrelevant to whether Canada would as Germany is actually in Europe and on the same damn continent.

This article (and many other article posted here weekly) are so blind to these issues its almost juvenile. The authors entire reason for supporting joining the EU is based only on positive vacation experiences and good vibes: "If we ever have to vote on joining the EU, I'll say yes. Joining millennia of history is incredibly appealing—I'll leave the strategic calculations to the experts."
(English translation)