There's a point after which you can say there's a pattern and not just a bunch of samples. When we're talking about populations we're talking in terms of averages and distributions, and the average in Poland is much like I described. In my opinion history of Poland is the second state religion, after catholicism, 91% as of 2018. And if you say many young people don't actually go to church, you're making my point (duplicity and appeasing peer pressure).
97% and 91%. Maybe it's you who don't know what you're talking about?
I wonder if people actually know this, and how many actually go through the pain of "de-registering" themselves from this organisation.
I also wonder how this affects things like "official statistics" of Catholics in the country.
Regarding Witcher 3 there is a very simple reason for nearly all the people being white. It's because the region is in turmoil and there's a war going on. So all the people (of different skin colour, different race) that can leave have already done so.
"Colorful" people leaving because of a war implies a racist society where unusual people are merely tolerated at best of times. History is more complex than that. Duke Mieszko I, the first recorded ruler of Poland, gifted a camel (according to Thietmar) to Otto III, future emperor. That was in A.D. 986.
The Witcher series has been full of fearful populaces wary and hostile to outsiders/other races (Dwarves and Elves in this case).
"Various polish governments have done XYZ" vs. "polish people lie". It's similar to "Israel does XYZ to Palestinians" vs "Jews want XYZ to happen to Palestinians" (to use a common antisemitic trope trying to justify antisemitism)