How can you explain the intensification of anti-reformist sentiments in high society after the war?

At that time, high society saw that Russia was able to win, even though no reforms were carried out. France could not win, even though then a large number of reforms were carried out in it. Thus, the nobles concluded that reforms were unnecessary. In addition, many were supporters of the idea of the Sacred Union. From this we can conclude that the nobility did not want changes, and the current state of affairs allowed them to actively promote anti-reformist views.