Only a few bad apples, one bad apple in the news every other day, but still, only a few.
Indeed, only a few, if we consider the total number of refugees we are talking about.
To be honest, I find it quite ironic that crime is mentioned as a reason against migration on a Polsih forum. Because if we go by that, we would have to immediately terminate free movement for Eastern Europeans, since there has been a noticeable increase in crime since Eastern Europe joined Schengen. Buglary has become a large problem, and many suspects are Eastern Europeans (often organized in large bands). Polish criminals invented a particulary despicable trick, which they used to swindle thousands of old people in Germany out of their savings. Just google "Arkadiusz Lakatosz". There have also been several high profile murders commited by Polish people in Germany. Yet nobody uses this against Polish people.
If you allow immigration, there'll be naturally criminals among them, it is a risk you take. Nobody claims that former politicians are now responsible for every crime Eastern Europeans commit in Western Europe. And nevermind that Eastern Europeans also on average, have views regarding LBGT-rights, democracy et. al that are in contrast to Western European ideals.
) towards women, infidelity, homosexuals, freedom of speech, human rights, and Jews.
This is not surprising, those people are from countries which do not practice these values, and you do not leave your socialization behind once you cross a border. This can be corrected with time, but you need to be patient, but people can change once they are given an alternative.
Eastern Europe who have no such history of colonialism
Poland participated in the destabilization of Iraq. That makes it also partly their responsibility.
engage in that sort of immigration policy,
This is not an immigration policy, but a refugee policy.
the idea that it should be imposed on the rest of Europe,
One essential principle of the EU is solidarity. Poland has been and still is a country that demands solidarity from its' partners, be it financially or against Russia. Yet other countries ask for assistance, it refuses, not with any legitimate arguments, (since taking in 1000 refugees would surely not overtax Poland) but on principle. This is a very dangerous developtment, because it undermines any attempt to find a common European policy decision. We can already see the consequences. So far it has mostly weakened Poland, e.g. Southern European countries like Greece and Italy have sided against them on issues, but we might see other problems too.
Do you acknowledge that these are at least valid concerns?
Those are valid concerns, but they can and are being adressed. That being said, I fail to see how taking in a reasonable amount of refugees could pose a danger to Poland's values. Even if they were to accept 10k a year, surely you must agree that those group could never become a significant group in Poland.