Essentially they are sure that noone would vouch for Poland (also for Baltic countries). I've been shocked that well educated people, like software engineers, scientists, etc easily repeat the narrative of various propagandists and, moreover, they say that these are their own conclusions.
The people are convinced that NATO won't hold up to its promises.
Re nuclear weapons. I really doubt that this shit is still functional.
Ohh how I wish I could believe that. Once you have the fissile material together my understanding is that it's not that hard to actually build a bomb. The success rate of countries that have decided to start a nuclear program is pretty damn high, and through all those years of nuclear testing, there weren't a whole lot of duds that I know of.
Anyway, I agree it's not a great cause for optimism. It would only take a couple of them going off to give the world a bad time. If nothing else they're dirty bombs.