The LLMs are committing ecophalogy of knowledge. Their nonsensical output is being fed back into them like an ouroboros, resulting in more nonsensical output.
Humans have been performing ecophagy since hunter-gatherer times, and the rate has increased exponentially since the Industrial Revolutions, but always to the benefit of Humans and humanity.
Now the general-purpose LLMs are being destructively fed all of human knowledge and the data centres are being destructively fed all of our natural resources; not for the benefit of Humans or humanity, but for hubris and apathy.
Diversity of thought is being homogenised as more people use LLMs for mundane tasks that would be quicker, easier and more efficient to do ourselves.
Our own Gray Matter is turning into Gray Goo.