None of what you say addresses the main point - one should NEVER willingly provide an enemy with security information - EVER. So your attempted points make no sense unless you hate the TSA worse than Al Qaeda.
First off, you are making the ludicrous assumption that AlQaida is solely composed of ignorant camel-jockies or something. Get a clue, they aren't--and the assumption that they can't spot security loopholes is patently stupid.
Pointing out the glaringly obvious to the public is handing Al Qaida the glaringly obvious--IOW nothing.
Okay, shame on him for saving them cab fare to check it out in person (assuming that has not been done already).
As for what I think of the TSA, who has run roughshod over the 4th Amendment Rights of Americans--up to and including groping children in a fashion that would have anyone else but a medical practitioner with good reason arrested for child molestation?
All theater.
The methods they are searching to prevent have already been used. Our enemies are more adaptable than that.
At least Al Qaida just kills and maims people, they don't daily humiliate and violate tens of thousands of our own people in what otherwise would be a violation of our laws--for what amounts to be theater--Why theater? Because the profile groups which should be scrutinized are hiding behind Islam and their rights, while everyone else can be scanned or groped. What a Farce, and an expensive one at that!
How many stories have we heard of the onerous TSA measures actually stopping a terror plot? (crickets chirping). They are reactive, closing the barn door after the horses are long gone.
To fail to address security flaws which exist means those flaws will, on the enemy's sweet time, be exploited.
Then we can have a new charade.
The most insidious enemy is not the one waving the knife or gun in your face, it is the one who robs you while pretending to befriend you. If the TSA is not willing to address the glaring problems in security, they aren't our 'friends' either.
Walt Kelly once said, "We have met the enemy and he is us."
If anyone thinks the feelgood farce is actually doing something, well, I'm happy for them. It seems they equate the degree of inconvenience and personal violation with effectiveness. In the meantime, while they are feeling good, security remains as impervious as a set of fishnet overalls at a fire ant convention.