If you catch X people trying to blow up a plane and no planes get blown up, that's fairly good evidence that your method of catching people trying to blow up planes has been 100% successful. So far.
This is one hell of a post hoc ergo propter hoc, I'll give you that at least
What's wrong with it? He's not making the usual "tiger-proof rock" argument used to refer to the TSA, after all. The TSA doesn't, as a rule, catch people who were actually planning to cause trouble. They either catch people who didn't know/care how much toothpaste they were allowed to smuggle onboard, or they catch idiots who forgot they were carrying a .50 caliber Desert Eagle in their shaving kit. This is a different argument altogether.
That is an extraordinarily dangerous notion.
Or maybe the people trying to blow up planes are just as bad at blowing up planes as you are at catching them.
Want to buy an elephant whistle?
The difference is that there are many groups who have publicly declared their intent to blow up Israeli airliners, so it's not as if you're defending against a non-existent threat.
No, but if my security guards keep turning away actual elephants at the border and I find no actual elephants nearby then I can conclude that my anti-elephant security works.