You misunderstood the parent poster. Germany's healthcare system is very decentralised; Germany had 16 states which have large legal, financial, etc independence in a number of fields such as healthcare it education.

A key difference though is that most of German healthcare is public; there are very few private clinics and those play no major role in the pandemic response.

Insurance is mandatory but cheap (and independent of employment). Healthcare is accessible no matter your budget and maybe in the pandemic nearly as important, everyone has the right to sick leave. You get s doctor's certificate and can stay home for a week or two or three, if needed. You also won't be fired for it as labour protections are strong.