HaLeiVi -“The Ohr Hachayim Hakadosh writes on the Pasuk of Im Ra’isa Shor Re’echa, that if you see a Yid straying you should bring him back to his owner.”
It’s a Mitzvah, not a Chiyuv!
“Kol Yisroel Areivim, so it follows that you should do what you can to bring them back to the fold.”
You must not have read my posts on the closed thread. I wrote there that you Do Not say “Kol Yisroel Areivim Zeh Lohzeh” by people who aren’t Frum!