Actually, German Jews had one of the highest survival rates from the holocaust, since they were able to see what the Nazi’s were planning long before everyone else (since they lived in Germany) and many escaped, whereas by time the Nazis overran other European countries it was too late to escape.
Being a Yekke, unlike most other sects of Judaism, entails being born a Yekke. Other sects include transforming, changing ????? and deciding to do what you want. Not Yekkes.
Actually, that is true with all sectors of Judaism. Nothing unique to Yekkes.