As funny as I find the anecdote, I would prefer any airline knowing who's on my plane. Wouldn't you?
That could be another 9-11. Worth the trade off ?
I'm intrigued about the system you are envisioning that creates the extra 100% delay.
The bottleneck is at boarding the plane and seating. Passengers stand in line on the jetway after they check in at the gate. The only reason gatecheck is rushed is to reduce amount of staff-time required at the airport. It doesn't get the plane boarded more quickly.
It will be easier to keep us all safe once it's widely available. /s
If we’re making an analogy to internet security, it’s like when websites use JavaScript to disable standard input into the password field. Just a pointless waste of everyone’s time.
Comparing apples to apples, Ryanair (low cost, optimised to hell, 737 only, 3rd in the world by amount of passengers carried in front of Southwest in 4th for 2022) has a turnaround time of around 25 minutes, meanwhile Southwest's is around 35 minutes (official figures of what the airline says for both).