“I understand the difference entirely. Now explain how an ethnic German, who adopted Judaism, can claim, on the basis of religion,”
Claiming Jews and Germans are the exact same people is ridiculous.
“You are unable to understand that the Jews of today have no connection to the Jews of 2000 years ago. “
More lying. Linguistically it would be true to say they adopted essentially dead language Hebrew in the modern era but even prior Yiddish had ancient Hebrew and Aramaic loan words. And albeit myth based the have their religion. They also have DNA evidence connecting them to levant. They aren’t racially pure Jews but no one is racially pure anything including you.