Funny that you would quote Solzhenitsyn, who in the last years of his life went hard-core Russian nationalist extremist and indeed called for separating certain people from the rest of us and destroying them (only this time it would be a “Christian state” doing the destroying, and not the godless USSR, so it would all be OK).
This is exactly what I think he is trying to say - and of course he is no exception to this rule. Are you equating his behavior with him being a failure, discrediting his work? This angle is a bit too black and white / dualistic for me.