His reasoning smacks of a religious/political debate: given two complementary destructive human tendencies, we should direct all our concern and condemnation a

His reasoning smacks of a religious/political debate: given two complementary destructive human tendencies, we should direct all our concern and condemnation at one, because the one is a seductive vice that threatens to run disastrously out of control, while the other is not so seductive and can be safely left to human judgment. See priggishness vs. debauchery, meanness vs. gullibility, paranoia vs. complacency, etc.