If you’re playing devil’s advocate then they’re not your words, you are advocating for the worst version of an argument. So why would it be a problem for be to mention satan? Unless those are actually your views, in which case you aren’t playing devil’s advocate.
You didn’t deny the holocaust, but your argument is flawed. The nazis thought of the Jewish people as a race. They attempted a genocide on that basis. They were being racist. Proudly so.
Maybe I’m argy because it’s a hot sweaty armpit of an evening. You can call me a twat but you are also now trying to paint me with “you agree with the Nazis” after I roiled against antisemitism so maybe introspect a little on that. To avoid shouting past each other, here are my beliefs on this matter and maybe you can tell me if there’s anything here you actually disagree with.
Your devil’s advocacy was for the question “is she wrong” and my answer is even if she’s right, she’s making things worse for everyone.