While the individuals you mention may have done what they are accused of, it still stands that countries generally do not revoke the citizenship of their citizens because of criminal activities. I can't think of anyone since Lucky Luciano who lost their U.S. citizenship for being a criminal. An we certainly have many, many criminals in this country, both native born and naturalized.
By the way, Israel DOES extradite criminals but the procedure is tough and tedious. It is purposely this way to protect Israeli Jews from extraditions based on political or trumped up charges issuing from antisemitic political regimes.
Israel defines antisemite the same way Jesse Jackson defines racist. Try to bring any member of either group to justice and you are an antisemite or a racist. Marc Rich and this guy are among the biggest criminals in the world. Israel is involved with both. The motivation is money, not protecting two defenseless Jews from neoNazis.