It's not a cheap deflection. You want other people to die in the trenches or worse, to die in a nuclear war. The deflection is to say that "your life won't change anything", which I mean sure yes, but that's what every single war mongers that doesn't want to fight the wars that they promote say. If everyone said that, no one would be fighting against Russia right now.

And it's funny to say that it's a repeat of Munich / Ethiopia. Again, war mongers will always prefer comparing to the few times where war was the only solution. The only issue is that not only do both situations have nothing in common (not that anyone cared about Ethiopia, since European colonialism in Africa was nothing new), but it also erases the fact that we are talking about nuclear powers here. If Hitler had nuclear weapons pointed at London and New York back in 1938, then obviously the equation wouldn't be as simple as "stop him now" even with hindsight lol.