I think that there is a misconception here which needs clarification.
Many times, the words, “Kiddush Hashem,” are used only to denote Jews acting in a way that makes them look good to non-Jews and to non-observant Jews.
However, it is a Kiddush Hashem only if it is done within the context of a Jew living his life according to the Torah, in agreement with Hashem’s will for Jews.
Nobody is hating anyone here. Both Howie and Edon are lovely people; but due to gaps in their Jewish upbringing, through absolutely no fault of their own, they are in a place where they are not supposed to be.
If a Frum Jew holds the door for an elderly person and helps him carry packages and helps him pick up items that fall onto the floor, or if a Frum Jew gives up his seat to an elderly person on a bus or a train; that’s a Kiddush Hashem.
If Edon uses his G-d-given gift to sing Zmiros at the Shabbos table or to sing in Shul; that’s a Kiddush Hashem.
No matter how polite the non-Jewish judges find him; a Jew singing non-Jewish songs to compete with non-Jews on a TV show is not where a Jew should be in the first place, even if, unfortunately, he doesn’t know it.