Parts of it seem not to be, but the bulk of it is. Here is a particularly clear example of opus-4.8-speak.

> Now, I want to be careful here, because this is the part where it would be very easy to start waving my arms around. Every single one of these has many causes. Suburbs and cars. Television, and then phones. A long list of things that have nothing to do with me at all. I am not going to claim I have found the one secret root of loneliness, and you should be suspicious of anyone who does. We cannot cleanly untangle these. That is just honestly true.

Watching trust in online content of any kind disintegrate in realtime due to AI in a forum that on balance breathlessly touts AI is surreal.