All we do know is that the universe had a start. The Big Bang rang a bell that's still ringing, i.e. the CMBR (cosmic microwave background radiation). But we know absolutely nothing about what caused or preceded it. A leading proponent of multiverses, Stephen Hawking, pretty much went over the edge starting around 20 years ago. He's even had to back down (kicking and screaming) from his claim to have shown that there is no God, based on evidence from before the Big Bang which was bogus. I know his situation is sad, but he's turned bitter and it's clouded all his thinking.
It talks about
not predicting a Big Bang singularity, not that it didn't happen. What quantum interpretation are they applying their new equations to? And how do they account for the (accelerating) expansion of the universe without that expansion having a beginning, and what about the CMBR?
The Transactional Interpretation of QM answers all quantum weirdness, including non-local vs. local issues, the double slit experiment and entangled particles.
Just saying that whether there are multiverses or just one
universe, that has no bearing on whether God initiated things or not.
That's exactly what I'm saying. Without evidence, the default position involving two or more possibilities, is I don't know agnosticism which puts the possibilities on the shelf, neither/none of which can be a default position.
Not that part, no. To begin with, how did risk management get involved? Without evidence, the only difference between the choices on the issue at hand (a laissez-faire God creating the universe or not), is hope, or the lack thereof. How does that involve risk? Believe whichever makes you feel better. If I'm right, you have to hear me say I told you so; and if you're right, neither of us will ever know. Hmmm, I guess that choice could be a form of risk, but with no consequences in this universe, and minimal in the next.