Surely you're aware of the various theories that AI is going to up-end the entire world.
How can you be surprised it's up-ending a geek forum first?
Nobody is surprised
The author of the article seems to be surprised.
As well as many people in these comments.
Nothing in the article is expressing surprise
"That said, the recent shift feels more profound: almost every day, it feels that the lineup is dominated by stories focused on AI, written by AI, or commented on by AI."
I interpreted that as surprise. I apologize if you disagree.