JUSTified and knowledgeable fear.
from the rest of the article:
What happens if they get five votes. Then every [pro-life] law you have ever passed is unconstitutional and there was no law in the future that you could ever pass that would affect abortion.
Bopp said that losing at the Supreme Court is not cost-free.
If Roe v. Wade was reaffirmed because the Supreme Court took up a prohibition [law] when they are not willing to overturn Roe v. Wade, we risk reaffirmation of Roe v. Wade, Bopp said.
In Casey, we thought there were seven potential votes, seven of nine. There was a good reason to think that. Well, we ended up with four. That loss was not cost-free. Judge Kavanaugh in his [confirmation] hearing said that Casey is a precedent that is entitled to stare decisis effect. In other words, not only do we have to convince him that Roe was wrong, but now because of Casey, we have to convince him that Casey was wrong.