I share similar feelings.
HOwever, such boasting is virtually never wise, and especially in this context. None of us knows what attacks may come . . . tomorrow or next week or month.
I've heard from the few Federal LEO I know that the consensus is that the next attack will be a soft target, probably a mall. Mall security in most places is not up to the job. The armed Milita (all the citizens) must be prepared to fill the breach, that means those with their CCWs, weapons and a mindset to use them.
If my comments give IslamoLurkers pause and make them reconsider their plans, good! If it inspires other citizens to take up arms, get training, continually practice, even better.