You do get to choose not to use TSA though. It might be inconvenient or expensive but that doesn't mean the choice doesn't exist.
Can you explain what you mean by that? Are you saying "You can just drive instead" or do you mean there is a way to fly within the US without going through the TSA?
Are you talking about being able to afford a private jet? If yes, then I would hardly call it a choice. I would definitely pick private, if I could, but I believe that most people (including me) just aren't able to afford it.
Otherwise, I have no idea what you are talking about. TSA Precheck still requires you to go through TSA security checkpoints, and you still gotta get all your items scanned and walk through the security gate (you just don't need to pull your laptop out of the bag and don't need to take off your shoes). And you still might get occasionally pulled to the side for an extra check because you got randomly picked (happened to me twice in the past few years).