It's demonstrably wrong. Lots of users care.
Discussion
I read a statement like that to mean [most] users don't care
It would be an argument (and wrong) if what he meant is that "because people don't care" (true for a vast majority of users), then we don't need to implement anonymity/privacy/anti-AML-KYC features.
Which features are we talking about?
I'm a fan of privacy at the protocol level and then compromises for efficiency/user experience at the application level.