 Hull et al. (2011) also take note of the apparent plasticity of user attitudes about privacy in SNS contexts, as evidenced by the pattern of widespread outrage over changed or newly disclosed privacy practices of SNS providers being followed by a period of accommodation to and acceptance of the new practices (Boyd and Hargittai 2010). In their 2018 book Re-Engineering Humanity, Brett Frischmann and Evan Selinger argue that SNS contribute to a slippery slope of “techno-social engineering creep” that produces a gradual normalization of increasingly pervasive and intrusive digital surveillance. A related concern is the “privacy paradox,” in which users’ voluntary sharing of data online belies their own stated values concerning privacy. However, recent data from Apple’s introduction in iOS 14.5 of opt-in for ad tracking, which the vast majority of iOS users have declined to allow, suggests that most people continue to value and act to protect their privacy, when given a straightforward choice that does not inhibit their access to services (Axon 2021). Working from the late writings of Foucault, Hull (2015) has explored the way in which the ‘self-management’ model of online privacy protection embodied in standard ‘notice and consent’ practices only reinforces a narrow neoliberal conception of privacy, and of ourselves, as commodities for sale and exchange. The debate continues about whether privacy violations can be usefully addressed by users making wiser privacy-preserving choices (Véliz 2021), or whether the responsibilization of individuals only obscures the urgent need for radical structural reforms of SNS business models (Vaidhyanathan 2018).