Point 1: the TSA in particular is not at fault for the modern state of airport security

Point 2: airport security is better than it has been since the 60s

You spent most of your first post arguing point 2, which is counter to my own experience, and which GP contradicted. Rather than address their points, you've ignored their argument and switched to point 1, which they didn't even challenge.

My summary of the situation: the culture of fear that arose in the wake of 9/11 has resulted in a slough of changes that as a whole have made the experience of getting on a plane materially worse than it was prior to 9/11. One of those changes was the establishment of the TSA. While the TSA does not itself bear much if any of the responsibility for the problems with the security process, they do serve as a figurehead for all of those changes. And yes, I agree with GP that airport security is much more inconvenient than it was in the 90s.

My indicator is how early you're advised to arrive before a flight. In the 80s and 90s, the common wisdom was to show up an hour early, or an hour and a half to two hours for international flights. After 9/11, that bumped up to an hour and a half for domestic, and now after COVID, they recommend 2 hours or more for a domestic flight, 3 during holidays.