Germany has "only a few thousand" ICU beds (and while this nber has trended downward over time, it was never more than 10,000). It's misleading to not phrase this as a percentage, which is something like a sudden 50%+ spike in need for ICU capacity.

Of course that will overwhelm the system.

(Also paradoxically, an improved healthcare system should need fewer ICU beds, so the decrease is probably a good thing)