This isn't something I made up, nor is it even controversial[0]. Antisemitism was a common cultural and political element of the early Church and its establishment of self-identity as separate from Judaism, and the belief (sometimes codified into Church doctrine) that the Jews were cursed by God for their rejection of Jesus as the Messiah, and the villification of Judas as the symbol of that curse is almost as old as the Church itself[1].
Certainly you will be able to find people saying anything if you look. But you can't present a wiki page where some guy "asserted" something was true and use that to justify your claim that it "isn't even controversial".
People will use anything to find a reason to dislike other people. You can be a part of perpetuating those malcontentments, or you can look at the entire rest of the New Testament which at every turn denounces condemnation and emphasizes love above all else.
[0]https://en.wikipedia.org/wiki/Antisemitism_and_the_New_Testa...
[1]https://en.wikipedia.org/wiki/Antisemitism_in_Christianity#C...