Apart from everything else, this is a pretty clear First Amendment/freedom of religion question
Many Jews interpret their scripture as encouraging, even mandating, abortion in certain situations (chiefly in cases of a threat to the health of the mother) — indeed, several Jewish groups are currently challenging Dobbs on First Amendment religious freedom grounds. Why does freedom of religion not apply there?
The difference is that no court would throw out a conviction for something like murder or rape if a defendant claimed that the crime was really just an exercise of their religion. Likewise, if the state determines that an unborn baby is a person, then abortion is murder. Also, I'll note that it seems to be mostly Progressive Reformed Jews making this argument, while Orthodox Jews (who follow Jewish Law in many areas to a much greater degree) don't seem to be making it (from what I've heard).