Where are these ads? I never see pornographic ads in my daily browsing.
> The dopamine response to seeing porn is similar to crack (4).
That doesn't prove anything about harmfulness. I think it was already obvious that humans are hardwired to be attracted to sex. Nothing in these links suggests that this response creates to an addiction similar to hard drugs.
> Pornography is categorically more dangerous to society than ads, tracking, and privacy invasions.
I don't accept that based on your sources.