Resident of Berlin here. Cannot dismiss this statement completely. At the height of the crisis in Spain, there was a noticable influx of Spanish people in a first-move-then-job situation. Most of them did not speak German, quite some also had troubles with English, despite education.

The Spanish presence is less visible now, I am guessing because some left, and the others got better integrated. Would not be surpised if some of the PhDs are prepping a few dozen of meals each evening...

Will ask my spanish friends soon.