I think it’s something we’re going to see more and more. When I was growing up, there were still a lot of the ww2 generation around. I grew up with my grandads both of whom saw absolute horrors, and I grew up with something like 10 less great aunts and uncles less than I should have had, these things never happened to me but it was made real for me. It’d be damn hard for me to be hawkish about war, or to say “we survived the blitz, we’ll survive brexit” (*), and damn sure I couldn’t think something as daft as “killing people who need killed should make you feel good”.
(*OK, bad example but pretty much none of the people saying that, actually remember the blitz, it’s the same thing just a generation further along)
Sadly it’s not like any of that ended with the war generation- I have mates I could have learned the same things from who served in Helmand, albeit in later life- but it’s so so different now. Fewer and fewer people will have met with that. And in the UK fewer and fewer people will be telling stories of life before the welfare state and NHS, where the generation before couldn’t ever take it for granted.
I mean, maybe I’m giving Plus One too much credit, it’s always possible he has had these things around him too and is just oblivious to it. Regardless, I think it’s pretty bizarre to think that good sides balance out bad things in your head.