Gen Y would think
Threads was lame. But then they didn't get sat down to watch it by a teacher who explained this was what would really happen when the bomb dropped. When.
Also they didn't grow up on a diet of truly horrible Public Information Films like
The Finishing Line or
Apaches.
No wonder some of Gen X are at heart nihilists.
Sadly, the older Gen Xers are reproducing and therefore bringing up a generation of nihilists-without-a-cause.
Blame the parents.
Always.
BTW - check out the above films if you have a time. It would be a serious time commitment to watch all three - I'd recommend Finishing Line, but Threads is the most seminal. I don't think shock tactics worked, but they are a reasonable reminder of how children were treated when I was a child.