It's honestly pretty funny that Atlas is dreaming of some random future where atheistic (or Christian-In-Name-Only) norms are the only ones present in politics, while in the real world, Roe vs. Wade is set to die as soon as Ginsburg leaves SCOTUS.
You do remember that Kennedy was the author of the Planned Parenthood v. Casey decision, don't you?
So? Replace Scalia and Ginsburg with pro-lifers, and that plus Roberts, Alito, Thomas is 5 votes against Roe. Kennedy's vote doesn't matter.
There's no solid evidence that Roberts or Alito would vote to overturn Roe. Just conjecture.
And even if they would, Trump will have a hard time getting one, much less two, justices confirmed that would join them. Assuming he even cares enough to try.