Sorry for any ambiguity. The world itself is not self-destructive. Humankind is not self-destructive. What is destructive is humankind's relationship to unconscious nature, which manifests itself in humankind's existence through thoughts themselves, and their material extensions, and the corresponding destruction to humankind itself and unconscious nature. You say the closest thing to a truth, but that seems to have no meaning.
Fabricated consciousness refers to the invented systems of thoughts which comprise our minds.
Our contemporary dependence on reason is justified through the concept of moving through the negative closer to the positive. I simply mean we are conscious of our instincts, that they are recognizable to us therefore, theoretically controllable. It does not seem to follow that we need to be unconscious to live in the same fashion as unconscious humans. Your conclusion from the proposition seems refutable by just one person living in a nondestructive way. If you mean instead, we cannot determine truth at any level, then this seems unreasonable.