0 chance. The SPD agrees, the CDU agrees, most of the AfD except the very nazi ones agree, the FDP and the Greens agree enthusiastically and likely even the Left Party is likely to have a sizeable amount of people voting for. Probably only the BSW (the left wing conservative splitter party of Sahra Wagenknecht) will vote against.
It’s less wacky politicians (though there undoubtedly are some that actually believe that) and more nationalist propaganda - showing Poland as an island of righteousness against the removed west or something. It’s an attempt by the far-right Law and Justice Party to gain support via culture war and shocking people into disgust and hoping they back you based on that. Even at the cost of pretty blatant lies.
It works on my family, at least in part. 😕