Just want to say I very much agree with this, and pretty much most of the other responses here. A lot of the times when I hear people talk about TSA "security theater" I hear them arguing that we really shouldn't have any screening at all, but it seems like the responses here are arguing specifically against:

1. Taking off your shoes

2. The liquids rule

3. Taking out your laptop.

To which I totally agree (and since as a TSA Precheck member I never hit those issues anyway I don't notice them as much).