Oh please, get off your high horse and stop acting as a superior if all you have is vague accusations of your interlocutor being not as smart as you are.
It is hardly correct to compare post-WWII modern conflicts with early 20 century conflicts, much less with the stuff before that.
The world is different, communication is different, the economy is different - just look at the comments here: ordinary people from all conflicting countries discuss economic repercussions of their countries being at each-others throats.
I wouldn't believe that it has no tangible effect. IMO, people seem really tired of all this shit and most would rather just finish it and be done with it.
Unfortunately, since it is a dick swinging contest between superpowers, the whole tension doesn't vent out as it should, but instead it gets unnaturally prolonged.
And I am not even touching the subject of that this conflict would have never even been a thing if a certain superpower wasn't so hard on expanding it's sphere of influence on a foreign continent, right at the border of another historically competing superpower.