Hi Saint (I love talking to a saint ),
I doubt, that NATO plays into this at all, while NATO is starting to leak, there is still a lot of loyalty toward it and US in the countries of the former Warsaw Pact. Because it stood up to the Soviet Union. You can see that in the fact that after most other NATO partners have declined, they have permitted US to erect stations of the Missile Defense System in the Czech Republic and Poland.
It has more to do with the fact, that the new government won the recent election, because they campaigned against accepting Syrian refugees. That was well accepted by the majority, which is very protective about their undiluted ethnicity.
Now the people appear to realize, that this was not the only issue on the agenda of the 'Law And Justice Party'.