It is not unusual for me to be confused. Please make the connection between nihilism and the rest here more obvious for me. I think I see it, but my understanding might not be consistent with your intended meaning.
No, because humans have invented machines. So humans are the nihilists. Yes, because machines are or will be the humans’ heirs. So machines are or will be the nihilists too. And as such they will at last destroy themslves as well, yes.
I think that certain Features like self-consciousness and Soul couldn’t be implemented by a Computer. Insofar as we are grounded and rooted in the universe, this concepts Play a crucial role. So as a consequence, machines aren’t able to be rooted in the universe, and this means that they are misguided as time went on. Günther saw this, and he thinks that with machine consciousness there is a way that man himself detects new sides of what it means to be human. This is coevolution of man and machine.
I hope that the future will show us what Günther has foreseen and thought. I also think that humans have no other chance in the long run than the said human-machine-coevolution. But if you compare humans with animals, then you will find that humans are the most terrible predator on this planet, much more terrible than all predators together; and if you compare some humans with other humans, you will always find that some are much more terrible than others. Think of the unconditional will to power, the greed, the fate between wanting to be like an almighty God and having to be like an almost powerless animal, which means the incapability of being like God and of being like an animal. Humans are no gods and no animals, they are somewhat between them, and that is their fate.
The only ethical and hopeful use of machines and high technology is reflected by Marvel’s Iron man comic book character. Machines should be use exclusively for personal, individual enhancement, not socialist structure containment. In the long run, socialist systems have no need for people, merely mechanisms … machines.
The over focus upon social structure (social power structures) being all important over the individual is what brings the end of the individual, just as with any other kind of misplaced priority.