As a Pole who has lived in Poland for his whole life, I can confirm the general idea of the article.

As for the crime people speak for, unlike what I've read over the internet about more "diverse" crime, the really violent, gang based crime usually called "youths" in the other countries, is non existent here. Sure, there are young underclass whites who do some crime, but it's usually minor stuff - stealing or vandalising unattended stuff in public, sometimes a scuffle, but rarely anything worse than that. And when they get caught, they have no race card to shield themselves with from the police and courts, because they are white Poles like pretty much everyone else.

A couple years ago there was a case where one of such underclass young men, aggressive, under influence of unknown drug, was arrested and died in a police station, most likely due to the drug. Some of his hooligan pals rioted in front of the station, got violently dispersed by the police, and in barely few days the whole matter was gone even from the media. There was no "hooligan lives matter" protest movement starting riots all over the country for years to come, or political talking heads invoking the incident for their left wing agendas.

Those who can, do, but fortunately with little effect, as our judges and prosecutors were not educated in the spirit of cultural Marxism (some were in plain old Marxism, and it's not considered something to be proud of in public). The most notorious of such groups, and only with any significant number is Gypsies, whose criminal ways plague whole Eastern Europe, luckily Poland doesn't have many of them, and since the EU expansions many moved to greener pastures and more naive victims. Incidentally, this is where the Romanian's criminal reputation comes from. Romania has the biggest Gypsy minority around, reaching about 3% of total population, while the country is the poorest in the EU, so the inevitable has happened, to great ire of white Romanians traveling the EU.

As for Ukrainians, Poles have mixed feelings on them. There is some bad blood coming from WW2 events, and some political and foreign factions would love to have such issues that Poland has with some of its neighbours to be as bad as possible. The fact is that for few centuries most of territory of Ukraine, together with the people who lived there, were part of the Polish-Lithuanian commonwealth, so a certain degree cultural connection and even a bit of shared history is obvious.
A bit of a similar story exists in Lithuania, where Russian sympathisers are doing the best to keep the local nationalist's anti Polish sentiments as high as possible.
Long story short, both internal and foreign politics of Eastern Europe are an extremely complicated, secretive mess of realpolitik, corruption, EU shenanigans, and historical beef.

But the good part is that in Polish political discourse one can be openly right wing on a mainstream internet forum and not get called a racist bigot in every second post.

This applies even to discussions between mainstream politicians and the comments regarding them. That's probably what struck me the most as a difference between Polish and English language political discussions, both video and forum based ones. The practically complete lack of race politics here, and the prominence of them in the west, with every political issue, from law enforcement and immigration, to art and education being just one little step away from getting sidelined into race politics.

Sure, there is some local cultural Marxist left, but they have less points in polls than an old lumberjack has fingers on one hand, so politically they are irrelevant, and their Soros funded pro-rapefugee\gypsy\LGBT drivel is treated as an exotic form of comedy by most people.

As for Polish expats, I would be careful about judging Poles by them - after all, most Poles are not expats, and those who are obviously have reasons for it. There is a considerable amount of urban underclass and also young leftists dissatisfied with the right wing political tendencies of the country among those who migrate out of Poland long term, and I understand why some people might develop stereotypes based on them, but it is important to note that they may not be representative of the people staying behind.

But even then it's nowhere near as bad as the reputation Romanians have had made for themselves by their Gypsies.

Ah the gifts of "diversity"...