I think a way to deal with it, is assuming that Von Braun indeed did kill 60 million people personally. And then ask where the evidence against Apollo is in that. Another way is first demanding evidence that Von Braun was indeed an evil man, not just nazi party member, and only after that(assuming he can back up that part) ask to derive evidence against apollo from that.

In any case the argument and backing it up remains his task, not ours.

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