We have culturally drawn a line in the sand where one side is legal and the other side of the line is illegal.
Of course the real world isn’t like that - there’s a range of material available and a lot of it is pretty close to being abusive material, while still being perfectly legal because it falls on the right side of someone’s date of birth.
It sounds like this initiative by Pornhub’s chatbot successfully pushes people away from borderline content… I’m not sure I buy that… but if it’s directing some of those users to support services then that’s a good thing. I worry though some people might instead be pushed over to the dark web.