I’ve heard from the Rav non religious have a status nowadays as tinok shenishba. My question is, at what point would a non religious Jew not get that status? Would we say even if he tries to fight Torah and try to push anti religious agendas?
Yes even if he is anti religious this does not detract from his status as tinok shenishbeh, as he was indoctrinated with these false views from his childhood, and hence remains a tinok shenishbeh.
See Shu”t Minchas Asher Vol. 1 Siman 10