"The lesson being learned is "war is glorious even if it happens on your land!"Based on the propaganda here, it is clear that the lesson being learned by the "patriot" demographic is not "war is hell".
The lesson being learned is "war is glorious even if it happens on your land! Who cares that your infrastructure is being wrecked and civilians are dying? as long as you are pro west US/NATO will punish your enemies, help you rebuild, let your people move to their countries as refugees, give you free weapons and aid! You can act with impunity!"
It's not about any specific weapon system, it's the overall message: "As long as west has your back, you can do anything free of consequences."
You act as though Ukraine asked Russia to invade it.
You act as though Ukrainian children asked to be killed by Russian bombing or shelling.
You act as though Ukrainian women and girls asked to be raped by Russian soldiers.
This war was Russia's choice, not Ukraine's.