You don't get to invoke Godwin when the subject matter is already nazi-adjacent.
I didn't find any direct reference to him supporting anything like athletic cleansing.
No single Nazi murdered millions or started a war, they all just did a bunch of things with a few others, and before you know it, a continent is on fire and tens of millions are murdered. None of them wanted that (some actually didn't, I bet you; they may have been fine with murder and conquest but not Auschwitz and Germany in ashes), and that is why when we see this disease (and I really think it's a sort of mental illness produced by mass society), we already know the infected people will not take responsibility for the whole group. They will not actually lift their eyes and view all their peers in the context of all of history. They will, again, just do a few things each, and then, again, be completely fucking useless when it comes to cleaning up their mess, and mourning the dead they owe. They didn't study what they are, so they have no fucking clue. And knowing that, we have no right to let them.