They probably run a heavily dumbed down version of the model, same as what they got caught doing with Fable.

And that's also why, as a legitimate customer, want none of it, you never know if you accidentally entered a zone they don't like.

"got caught"

to clarify, this behavior was announced with the model release

The extent got caught.

if by announce you mean shove it somewhere in a pdf with hundreds of pages, yes

https://www.anthropic.com/news/claude-fable-5-mythos-5

This is not hundreds of pages and it gets its own bold headline section.