One Rabbi’s opinion is just that - one opinion. His followers may or may not accept it and other Rabbis may agree or disagree. In practical terms, someone else’s kidneys might not be a good match. You can’t just pick someone off the street and steal a kidney.
"Jews as a religion are no better or worse than anyone else"?
I'm not aware of any other religion which claims: ...Rabbi Ginzburg states "if a Jew needs a liver, he may kill a passing non-Jew & take his"
https://ifamericansknew.org/cur_sit/shahak.html
One Rabbi’s opinion is just that - one opinion. His followers may or may not accept it and other Rabbis may agree or disagree. In practical terms, someone else’s kidneys might not be a good match. You can’t just pick someone off the street and steal a kidney.
All religions have barbaric ancient teachings. It is not fair to condemn all for those barbaric teachings.