The only problem with that answer is that the ideology from which a jihadi is made would still exist, even if every last one of them were killed. So it's like trying to destroy a particular plastic toy rather than destroying the factory that makes them.
And really, you can't destroy this factory. There will always be Korans in this world. What you can do, however, is expose the game while non-Muslims are still a majority. The non-Muslims of the world could realistically expose, contain, and marginalize Islam. But to do that, they would have to understand what Islamic doctrine says. As long as they stay in the dark about that, they are vulnerable to being "scammed." They'll go along with things like public calls to prayer, Muslims having their own no-go zones, or whatever special consideration is being demanded.
But once the general public is aware of the true and disturbing nature of core Islamic teachings, they will be willing to do what needs to be done: To stop all concessions to Islam, period. Islam will wilt on the vine. It will have no air to breath, no sunshine to grow.
Don't get me wrong: Orthodox Muslims committing violence need to be stopped — jailed or killed. But that will not solve the problem of Islam. Only the education of non-Muslims can do that.
Non-Muslims who don't know what Islam really is are vulnerable to being bamboozled. Those who know can see right through taqiyya and will not be moved by it. Consider the latest scam that cons money out of U.S. taxpayers. Almost 300,000 people in the last two years have been called by someone claiming to be an IRS agent. The taxpayer is told they owe taxes and must pay right now or face dire consequences. Believe it or not, some people pay right on the spot. So far these scam calls have conned taxpayers out of 14 million dollars.
A person who doesn't know about this scam is vulnerable. But if you know the IRS always contacts people by mail if they owe money, it would be impossible to fool you with such a call.
People who see what ISIS and Boko Haram are doing get upset. It's completely understandable. And a feeling of anger makes people want to lash out. Also understandable. The education of our fellow non-Muslims may seem too mild a remedy for such horror in the world, but in the long run it can push back Islam better than anything else.
And it's not such a mild remedy. If you think talking to your fellow non-Muslims about Islam is easy, you haven't tried it yet.