DY > kikayon wasn’t made by reshaim with the intent to destroy Yiddishkeit.
Hashem explains his moshal to Yonah – think of multitudes of people and even animals .. I am not sure would this include reshayim or are we saying that Ninve did teshuva and only therefore deserve being saved. Even in the second case, surely that current Israel has multitudes of observant Jews (if you count wider than a specific political group) that deserve protection.