I kind of fear the same. At the same time I wonder if structured information will gain usefulness. Something like man pages are already a great resource for humans, but at same time could be used for autocompletion and for LLMs. Maybe not in the current format but in the same vein.

But longer form tutorials or even books with background might suffer more. I wonder how big the market of nice books on IT topics will be in the future. A wiki is probably in the worst place. It will not be changed with the MR like man pages could be and you do not get the same reward compared to publishing a book.