It's a rational possibility, but it isn't science. I do suspect for many it's a hiding place based on the recognition of strong emergence and understanding of fine tuning questions. I suspect that from listening to some (not all) of the prominent physicists and the way they posit it.
This is a very discussion of it.
[media=https://youtu.be/QHa1vbwVaNU]
Some really stupid discussions associated with this - people often say, everywhere, that if there are infinite universes then there must be a universe exactly the same as this one except you are wearing a different coloured shirt or a universe where spiders drive cars. I've heard intelligent people make this logical error. This is simply equivocation on the meaning of 'infinite'. Infinite means unlimited in number, it isn't required to be unlimited in variety.
There is an infinite number of fractions between 1 and 2, and none of them are 3.