The peanut gallery is not to be trusted on how curable his cancer was, and this article says nothing firm about anything.
If someone chooses not to be tortured for their last weeks of life, in order to have those weeks, that doesn't make them unscientific or suicidal.
But then, he rhetorically asked, if surviving the concentration camp was success, did that mean the vast majority who didn't were losers?
And I think his father said something to the effect, that it was random, there was no "survival of the fittest", so no, matter of factly, the dead were not ones who failed.
