Why would anyone expect porno sites to track users less than The NY Times (for example) does? I mean, it's not like they're your friends.
But it cuts both ways, of course. So established social norms about privacy are also widely ignored. The fundamental business model is based on violating users' privacy. Two of the largest online businesses, Google and Facebook, rely on monetizing the violation of users' privacy.
So yeah, perhaps it's understandable, but it's gobsmacking naive to think that online porn would be an exception.
Nearly 20 years ago I worked as a Dell phone support technician for a few months and it was the best learning experience I've ever had in terms of understanding what the "average" person can actually comprehend. I think many technical people have experience with non-technical people who are otherwise fairly educated and clever (eg parents/grandparents), but there are a lot of people who have difficulty with the concepts, let alone the details. I think those people still deserve privacy.
I just think it unrealistic to expect that they'll get it.
And it's also arguably unrealistic to expect that they'll learn how to take it. So for sure, jawboning is also a viable option.