I agree honestly. I’ve gone through the exact process op has described several times now and flew even more before the process started.
I think the lines are worse than they used to be. I have not seen the scan improve anything. The only time I’ve seen things move slower for me is recently the agent hadn’t done an opt out in a while and had to remember how to do it. The TSA precheck line I was in did not have opt out signs posted. I just politely asked anyways (and they did comply).
I had a similar situation happen with customs where the guy was confused by my request and hadn’t done one it the old way in a while but honored it without argument.
This is why you use fish shell and just type something vaguely similar to what you remember and hit the up arrow key.