There is nothing wrong with laughter... or black comedy.. however I do find it ridiculous when somebody born in 1943 sais "Well, you do not know because you did not live through the war!"
Let us not presume to know more than what we do
I've learned in my short life that I'm wrong much more often than I thought at the time.
There's a real difference between someone with life experience and someone who's an armchair historian.
I've picked my grandparent's brains about the past as much as they would let me. "A bomb fell in the neighbors front garden". To me that's a fact. To them, there's a whole experience behind that one statement. I'm not going to begin to daydream myself into their shoes and pretend I know what it's like.
(In regards to the date (I presume the specific number was your point, "a baby asserting experience"), 1943 would only let them experience reparations, which was probably not insignificant. My grandparents were in their early and late teens. One was a young police/militia officer. I presume they know better than I do.)