I think you are correct, so what is really going on here? Could it be that the real fear is ending up with a Supreme Court that adheres to the Constitution as a principle across the board and an end to the ability to keep conservatives off of the courts simply because they are conservative? What a nightmare for "progressives".
If Roe is overturned abortion will become illegal in many parts of the country, and heavily restricted in others. For one who believes in a woman's right to abortion, an objection to anti-Roe judges is then quite rational.