I don't think this is true, at least if we're talking about the immediate post-Napoleonic period, as serfdom existed in Austrian Galicia until 1848.
Below item put up on YT 9 months ago.
Dschinghis Khan - Moskau (Starparade 14.06.1979) 4:28
https://www.youtube.com/watch?v=lyuFLU2Zqz0
@quietviolence7957
7 months ago
Someone once wrote: “A band named after a Mongol leader singing in German about Russia is Poland’s worst dream.” It still makes me laugh.
Moscow
Foreign and mysterious
Towers of red and gold
As cold as ice . . .
https://lyricstranslate.com/en/moskau-moscow.html#songtranslation
So long as we still live.
Should read ”Poland has not perished yet...”