The sheer tradecraft necessary for privacy and anonymity these days is so absurd. One would need to do things like somehow buying burner phones untraceably, removing the battery when not in use and only ever turning them on in a specific location that's completely unlinked from one's normal everyday activity, and only use the phone for one specific purpose in order to prevent identity cross contamination. The depths of compartmentalization necessary for this stuff almost seems to require that the person develop a split personality.