Then from Wikipedia:
> In 2016, Germany recorded the highest trade surplus in the world, worth $310 billion. ...
https://en.wikipedia.org/wiki/Economy_of_Germany
So it's not just the magnitude of the trade balance (negative) but the velocity (sharply downward) that should get attention.
The US has run persistent trade deficits (now ~ $50 billion) for years. This brought cheap goods but eviscerated the manufacturing base. You could call it a tradeoff. What the US has going for it though is: (a) the ability to print its own money; (b) the ability to print the world's reserve currency; and (c) the demographics to support a consumption-led economy.
Germany has none of these things going for it. The situation is not sustainable. The article implies that the change is not structural (increased competition from elsewhere, for example), but if it is things could get weird real fast.