Nothing new, all known.
I do believe that Germany is now one of the cleaner nations in sports, which doesn’t mean there is no doping in Germany. As a consequence you can observe their drop in medal tables at Olympics. While other nations emerge as Netherlands , Italy, Norway etc.
not to mention China, US, UK, France etc. let’s be realistic and say there is a limited number of athletes competing at top level without help. Those are the exceptionally talented ones.
Or do we believe the US, Chinese , French, Dutch athletes are so much more talented than the others and do much better training methods? And apologies mentioning only those countries, but as said probably many athletes at top level use some help incl my home country, but I guess it’s more spread in „rich“ countries or where you have state sponsored doping (Russia, probably China, to some extent US, etc)