kinda true in that no one cares about you specifically (as in no govt agencies or corporations, yer mum loves ya), at least until you do something to draw focus to yourself

however there's multiple layers of tracking, from local to state to federal (and various agencies at each level) as well as every single corporation that you interact with or buys your data. all of these actors are primarily interested in your data in aggregate (unless and until you give them a reason to focus on you specifically) so that they can manipulate whatever demographic/class you belong to into doing whatever action serves them.

It can be difficult at first to conceptualize how each of us exists as a single part of various larger systems/entities, but that realization is instrumental in understanding how things work in today's globalized and technological world.