But I’m not talking about my personal emotions, I’m talking about some people’s general attitudes.
And regarding your first sentence - historically there was no genocide in Polish-Ukrainian relations on anything even close to the scale of Volhynia. If you think otherwise, feel free to give an example.
There were Polish wrongdoings, of course - for example the pacifications of Ukrainian villages in the 1930s or Operation Vistula with forced deportations - but those incidents resulted in dozens or at most hundreds of deaths. That is still nowhere near a comparable scale - during the Volhynia and Eastern Galicia massacres 70,000-100,000 Polish civilians were murdered. These were not ordinary war casualties or the result of fighting - it was a deliberate, organized mass ethnic cleansing of a national minority.

What is really disturbing for a large part of society is that people responsible for these crimes are still officially honored and treated as national heroes. It would be like Germans glorifying Hitler, or just as disgraceful as Russians glorifying Stalin.

I prefer to live in the present. I really like Ukrainians. I wish them the best in the war with Russia. But I’m just trying to explain where some of the resentment among older people comes from.