Earlier quoted context omitted.
Not so long ago, it was scientific dogma that all life on this planet was dependent upon photosynthesis. Then some oceanographer types sent some cameras down to the sea floor to look at some hydrothermal vents and... there went that idea! Is our universe tuned for life or is life tuned to its universe?
That would be a great comparison if the many worlds hypothesis were proven or even provable. As it stands, it is basically just a belief which is held to explain the scientific facts. Not much different from ancient man's belief that spirits had influence over the weather cycle. Check out https://strangenotions.com/flew/
One of these, M-Theory is an extension of string theory and is the only theory known to elegantly unify quantum mechanics with general relativity's gravitational force in a mathematically consistent way. It’s not supported by experimental evidence yet, but I’d hardly characterise it as no different from belief in spirits.