Earlier quoted context omitted.
Do you have any evidence to suggest that the absence of 9/11-like attacks has anything to do with the TSA?
None. By their nature, measures like this annoy people. If this was the 12th of September 2001 would your opinion be different and if so, why?
So, no my opinion never budged before, during or after 9/11. In fact, it hardened. But, I'm afraid the terrorism worked. We lost freedoms, rights and principles all due to the 9/11 attacks and US reaction to it. Terror won. Bin Laden won. We became more like them.