The peace is short-lived. The reason I stated that is because the peace was created by the previous Kage who worked together. Its Hashirama's legacy after all, to carry those ideals over to the coming generations. The second they fail to do that, the peace will be gone and that is most likely the result of Kawaki. The technical advances started already before Kakashi became the Hokage. Roughly a year after the Great Ninja War when Tsunade was still the Hokage. (As Kakashi had doubts and didn't formally take the title until some time later.) The technology mostly came from The Land of Waves and not Konoha, so it had nothing to even do with the village, let alone Naruto. Conflict will come, no matter how you view it.
Even after the war there were groups who followed Madara's ideal and created chaos. During Kakashi reign we had Toneri who attacked the earth, creating conflict. During Naruto's reign we had Momoshiki and now Kawaki who created conflict. There hasn't been any form of lasting peace after the Fourth Great Ninja War. The kids that are growing up in Konoha right now, are fully aware of what conflict is. They know of hatred, but the previous generations are doing their best to steer them off that path. However, the moment they fail with one, the world will be plunged into chaos again. Even if they don't fail, there (as we know) are people who still follow Madara's ideal.