Maybe very weird. Aiming for humor but missed.
Not weird at all, a humorous treatment of a question which is oft asked in various forms. The best person to answer your genealogy related questions on this forum is Kaprys. She is Polish and is interested in the subject, seems well informed about it. To answer your queries, based on my own observations of Polish people:
1) Many people won't know the names of great grandparents, certainly they won't know all four sets of them. Think about it. In England where records have been kept for hundreds of years and the information is available if you seek it, surprisingly few people know the names of their great grandparents. Now consider Poland and its history, inadequate written records, partitions, wars etc. However as Ironside says, it varies, you may be lucky.
As to whether people care about their family history in Poland, it's probably much less important to them than it is to a Polish-American. I think it's a growing area of interest among younger people though.
2) People might know that they had a relative who emigrated but they won't actively think about the fact that they have distant cousins in the States.
Some people won't like what I have to say now, but it's something I've observed. I've known a few people who've traced their Polish relations and found that the relations were friendly enough at first but that very soon they began asking for money. I knew an Irish man around your age, whose grandfather was Polish. He traced his Polish family and they were friendly and welcoming but his daughter said that after a while, he was receiving regular requests for money from various distant cousins. Mind you this was about fifteen years ago and perhaps with the new prosperity that will have changed.
On the whole, Polish people are not big on sentiment. They are practical, down to earth people and survival is their number one consideration. Their touchy feely, lovey dovey side is reserved for young children and dogs.