Whatever else can be said about gnosis, it is clearly not hostile to apocalyptic thinking. In the light of this history, it is hard to accept Bloom's complacent assertion that gnosis bears no guilt because it has never been in power. It has frequently been in power, though rarely under its own name. There is even a good argument to be made that the Nazi regime was fundamentally Gnostic. There is, in fact, a logical connection between gnosis and apocalypticism.
Apocalypses come in various flavors.
Some are hopeful, some are fearful, some are actually conservative. There is also an apocalypse of loathing, of contempt, and hatred for the world and its history. We can clearly see such a mood in societies that nearly destroy themselves, such as Pol Pot's Cambodia, but it has also informed less extreme revolutions and upheavals throughout history. Gnosis has much in common with this mood. Gnostics at best seek to be reconciled with the world.