I think its dangerous. It could give the idea for the FBI, CIA to do some real false flag stuff.
Also these fake plots can give the ilusion of a bigger terrorist threat. I think thats the idea behind some of them.
From the article:
Of the 22 most frightening plans for attacks since 9/11 on American soil, 14 were developed in sting operations.
Of course, when you do give an opinion, it's for the most asinine, tinfoil hat reason imaginable. I'm not worried about the CIA (which doesn't operate domestically anyway by law) or the FBI trying to bomb America themselves in order to provoke a war. We're already pretty actively fighting terrorists around the globe as is, so there's no need for encouragement there, and you hardly need to bomb your own people in order to manufacture evidence to start a war (see: Iraq). All this talk of false flag operations is just a prelude to a bunch of "9/11 was an inside job" BS, which given your track record I wouldn't be surprised you believe.
When you should worry about operations like this is when it borders on real entrapment (as opposed to some of the examples in the article) or when it
goes after innocent people. The concept that the FBI can get "ideas" for false flag operations from these stings is ridiculous since they have thousands of contingency plans for nearly every type of emergency imaginable in place anyway (the ideas already exist essentially), and they're running the operations, so they would be giving themselves the ideas, not drawing inspiration from elsewhere.
Now, the guys who already publicly expressed a desire to attack transportation centers, prominent landmarks, government buildings, synagogues and so forth, the ones who have donated to al Qaeda or attended training camps, and the ones who have posted "death to America" or "death to the Jews" blogs; if they can be convinced through a sting to plant a fake bomb or go through some other fake terror plot, I don't have much sympathy for them regardless of the bumbling Keystone Cops nature of their plans. No amount of benign encouragement (as opposed to coercion by threat or so forth) should be able to trap someone into being willing to attack their country or innocent people.
However, if they've not expressed any desire for terrorist acts or hate crimes before, and have been coerced somehow through threat of force or manipulation of themselves or their families, that's entrapment and that's wrong. That's the kind of thing you should be worried about; unchecked expansion of power of law enforcement and intelligence agencies and questionable investigative techniques, not the FBI bombing buildings in the US.