1. Rav Sonnenfeld, the Ponevicher Rav and the Chazan Ish all vehemently prohibited saying it about a Jew, even a mumar. The proof is that if a mumar dies childless his wife needs either chalitza or yibum (SA EH 157:5) – and that continues his name.
2. ???? ??? ?’ ?? ??’ ???? ?
????? ???? ????? ???? ?? ??? ?? ??? ?????? ???? ?????. (??? ??? ???”? ??”? ?? ???? ??”?) ?????? ?? ?????? ??? ????? ??????? ?? ????? ????? ???? ????? ????.
???: ??? ???? ????? ????? ??? ??????? ???? (????? ??? ?”?) ??? ??? ?? ???? ?????? ?????? (?? ??????? ??? ???? ??”? ??’ ???? ???? ???? ?????) ??”? ????? ????? ???? ???? ?????? ??????? ???? (???? ????”? ??? ?”? ??”?) ??? ???? ??? ????? ?? ???? ?? ??? ???? ????? (????? ?”? ??? ?”? ?????? ?”? ???? ??”?) ??”? ???? ??????? ??? ???? (?? ??? ?”?). ??????? ????? ???? ??”? ???? ??????? ????? ??????? ?? ????? (?”?) (????? ???? ???? ??”?).
Thus we certainly mourn those who were raised in non-observant homes.
3. Rav Kook explains that there are two parts to being a poresh midarchei tzibbor:
a. Not keeping mitzvot.
b. Not wanting to be considered a Jew
Today’s secular Jews consider being called non-Jews fighting words so they are not in this category.