"Life arose because there is an infinite multiverse and we just happened to be in one of the infinite universes where both the cosmological constants that allow life to be possible are the correct values and chemicals randomly combined on the right planet to allow increasingly complex structures to evolve."
"The parting of the red sea story happened because there is an infinite multiverse and we just happened to be in the one where atmospheric turbulence whipped up a windstorm sufficiently powerful to move water in the red sea and someone documented it"
"Infinite Multiverse" means you can explain away any improbable event with "well, there are infinite universes so the probability actually approaches 1 across all universes"
> Multiverse is not as mysterious as "god did it" (a.k.a magic), it's a very specific hypothesis.
If you can test the existence of another “universe”, it's really the same universe.
Plus, even if you have a model of a multiverse in which the component universes have variation on particular axes, you can still ask why you have such a well-constructed set of parameters such that varying them will allow life somewhere on the multiverse. Multiverse is not only a non-terrible hypothesis, it's one that doesn't do anything but kick the problem it is meant to explain one step further down the road without transforming it's general shape.
You can "explain" absolutely anything with god/magic, and many religious people do. Try that with multiverse. It doesn't work.