No, you need to believe in fairy-tales to see the fictional evidence of a global flood, as there's no evidence whatsoever.
Antisemitism is specifically against Judaism, i.e. the Semite people. You can't use it against just any belief.
I couldn't care less what fairy-tale book it's written in, whether Bhagavad-Gita, the Bible, Hávamál, the Quran, an L Ron Hubbard novel, or in the Swedish book Surrounded by Idiots* by "leadership-coach" Thomas Erikson (describing the pseudo-scientific DISC method of defining people by four colors). There's still no evidence in favor of a global flood.
* A clear case of "If you feel that everyone around you is an idiot, there's a risk that it's you that are the idiot".