I think you have a skewed view of events and exaggerate a bit. You can't base your opinions based on things like anecdotal accounts of two old ladies in a shopping mall and then extrapolate and generalize. What's happening in Poland, and in Central/Eastern Europe (CEE) in general, is quite complex. People hate complexity. They like the nice, tidy narratives in the media that warring political factions spin around their own interests.

First of all, you might want to distinguish between patriotism and nationalism (understood as a chauvinist national cult). The two are quite different.

Second, the period of 1990-2008 is kind of a twilight zone of history. I remember how, following the fall of the Berlin wall, the end of history was an idea that excited people. Come 2008, history has returned and with force. The recession exposed the geopolitical seismic faults stretching and fracturing the world. Capital was found to have a nationality after all. CEE resides on a very particular geopolitical fault line in Europe with its own unique geopolitical, economic, and security concerns and challenges, often at odds with the interests of countries like Germany and Russia (again, historically the case). For many of us, this return of history is something quite new, many of us having spent most of our lives in that supposed post-historic twilight zone.

Third, it's in poor taste to conflate opposition to taking in migrants with bigotry. Sure, some people are bigoted or simply ignorant. They do exist. However, that's not what is driving the essential opposition to the taking in migrants. The migrant crisis has been an extraordinary cluster fuck of epic proportions. Also, consider that: the majority of migrants are not Syrians or people from war-torn regions; that the West (including the US, largely at fault for destabilizing the regimes that kept militant Islam in check; many of them countries with colonial pasts in those countries) failed to take in the numbers they could; the wealthy Saudis, with ties to the US, failed to take significant numbers in; the homogeneity of CEE countries post-WWII and the social problems of taking in migrants of radically different culture would cause for both parties; the on-the-ground support, financial and otherwise, of Poles in Syria; the ~1 million Ukrainians Poland took in from war-torn Ukraine while countries like Germany did not. I could continue. The point is that this is a complex issue and the media has been vicious in its suppression of many important facts.

Fourth, Western leftists have no qualms trying to strong arm CEE countries into accepting abortion, gay marriage, transgenderism, etc (abortion was once completely legal under communism). They have no problem (through a network of foreign-sponsored NGOs, foreign-owned media, foreign "aid" programs, etc) insinuating these views and attacking those who oppose them with the usual accusations of fascism, misogyny, bigotry, and so on. I don't want to get into a debate about these issues here. I only wish to illustrate the aggressive, paternalistic, and presumptuous attempts to foist these ideological positions onto these societies with the help of wealthy financiers (such as Soros). Don't forget: most migrants come from societies where legal inventions like gay marriage not only doesn't exist, but gay relations are punishable.

Beyond that, I wouldn't overstate the transformation you believe was orchestrated by the current government. The state media in Poland changes hands every time the gov't changes and it is a drop in the bucket compared to the world of corporate media which backs the opposition parties regardless of which gov't happens to be in power. Many voted for the current gov't out of exasperation with the previous gov't and its allies. Also, the idea that you are ridiculed for criticizing the current gov't is silly. There is a deluge of criticism of the current gov't, from media outlets to cabaret satire. You are not unique in your perspective and your perspective resides very neatly in the narrative that's been spun by the opposition, its media backers, and affiliated parties. Even some high-ranking clergy in the Church have expressed criticism. Then there's the internet. Cities tend to have more left-leaning tendencies than rural areas. I have come across critics everywhere. I simply cannot fathom what small Polish island you live on where what you hold is remotely true.