Don’t get your point.
You think a customer should expect a chat room with this name to be safe.
Safe for what?
Seems to me your claim is similar to saying that if the police put an expensive car out as bait and someone tries to steal it the cops have committed entrapment.
Anybody entering a chat room named “dadanddaughtersex” gets exactly what’s coming to him, IMO.
Now if the cops approach a random guy in a more general topic chat room and steer the conversation to such things, you might have a point.
I’m asking about the larger ISP setup, with its rules about rooms. I should not expect to see a vendor of Mad Dog 20/20 in a Salvation Army shelter, for instance.