Fellow Eastern European here, I remember I was made fun of by my former colleagues back in 2005-2006 when I was saying that the United States requiring bio data in order to get a traveling visa (I think fingerprints became mandatory for US visa applicants back around that time) was very not ok, I received the same responses that you mention.
Nowadays that the bio thing has started reaching and directly affecting people more to the West the subject is fortunately debated on websites like this one and also in some parts of the Western mainstream media, but back in EE the subject is still ignored or at best is made fun of. I remember attending a street march/protest against bio ID cards/passports a couple of years ago, and the majority of participants were religious people that believed things like "666 the number of the Devil" and all that + a couple of tech people like myself which are still seen as paranoid by our friends and work colleagues. Unfortunately the civil society from this part of the world is totally mute on this type of subjects.
But most people in EE are also way too cynical and demeaning by default and yeah, that's a real problem when issues like these arise. Nobody takes them seriously until something monumental happens.
I know the primary issue is that the SSN wasn't intended for the use case it is used in, but we're at the point now that it is so probably best to protect it in a manner that protects the user/owner.
I noticed that Americans and part of Europeans (mostly Germans I believe but probably others as well) perceive leaks of personally identifiable information as outrageous but everybody I know here in Eastern Europe are indifferent. Unless they lose money or their company gets a negative PR, they could not care less.