By the way, it could be tricky for non-native to understand what is "неправду говорили" about and relation of it to "виднее наверху".
Some time after death of Stalin he was widely criticized by next soviet government as tyrant. Term 'cult of Stalin' was born.
So, these lines are about his rejection to perceive Stalin as tyrant, however, 'government knows better', so, he didn't disputed it actively.