Putin is playing to his base. The average Russian is virulently anti Semitic. They blame the Jews for the Bolshevik Revolution, regicide, the suffering, deaths and cultural destruction from 1917 thru 1993.They view Putin as a vibrant, strong leader who will do what is necessary to restore Russia. Now it should be understood that the average Russian , while not stupid , is woefully ignorant regarding history. Critical historic scholarship and the subsequent education in universities, colleges and secondary schools has not occurred in Russia for the last one hundred years. It is not surprising that the leader of that country could spout such brutal nonsense seemingly indifferent to the real harm such comments cause. Nor is it surprising that he will not be challenged or criticized in any meaningful manner within Russia. He will be rightly criticized in the US, Israel and most of the West. But it is critically important to understand the real attitudes of the Russian people. Such comments do not occur in a social or cultural vacuum.
Probably because it was overpopulated by Jews to begin with, similar to how Jews are overrepresented in Marxist think tanks and other groups in the United States, having written the majority--if not 100%--of the founding documents or working out the educational/sociological grounds for all this "white people are evil" and "tranny sex is good" stuff we see in the schools.
Denying it, or saying it's a conspiracy theory, doesn't help the Jews confront these uncomfortable facts.