Well the thing is, this guy paints the TSA as being head and shoulders better than what was in place before 9/11, and that security is so much better now.
Aside from locking the cockpit doors and the passengers kicking the terrorists asses should they try that again, everything I've seen says the security performance is actually WORSE than it was prior to the TSA implementation, and unless they start x-raying checked baggage they havent done anything useful.
What do they think, the terrorists will say "well, we could put a bomb in a checked bag and blow the flight up....nahhh...thats too easy...and since we cant bring nail clippers and knitting needles with us, and we have to take our shoes off...well...I guess we're licked..."?