He is just describing the historical process that left almost 70 million dead in Russia in the first half of last century.
First it was 20, then 50, now 70.
Fact is, Solzhenitsyn was just as much an idiot back then as Adolf Hitler was. He blamed the Jews for everything. The government was infested with Jews. It was the Jews that killed everybody, lost the war, locked everybody up, blah, blah, blah fuckitty blah.
Its the same antisemitic bullshit all anti-Semites use.
There was and still is no truth to any of it on either man's part. They blamed the people they hated. People like you still do even when the reality is it's your own fault for being a patent idiot.