Marx; it’s in maaseh ish, related by rav greineman
AAQ – a mechalel shabboa befarhesya isn’t being punished by not having the halacha of a jew, he simply does not have the status because being a jew is synonymous with keeping the Torah. We don’t know how Hashem will judge such a person, nor is it relevant – the issue is, does this person have the din of a yisroel or not? And if one harbors forbidden hashkofos, does not keep shabbos, believes in a rebbe as god, allegorizes chazal in ways outside of the mesorah, to again quote the chazon ish “those who say halel on 5 iyar and blame the gedolim for the Holocaust”, or any other manner of severe deviation from Torah, such a person loses his status and is halachikally treated as a goy.