I think this summarizes the situation very well.
Several folks in this thread have commented on materialism, as to its current influence on science. It seems to me that materialist philosophy has been the driving force behind the infinite-attempts explanation, because materialism does not accommodate anything, like fine-tuning, that smells of God.
The same thing is has happened with quantum mechanics, and the need for a conscious observer to collapse the wave function. The many-worlds interpretation appeals to materialists because it appears to overcome the stench of a God who created something other than the material universe (like a soul) – though this approach does not actually succeed in overcoming the stench of God (as Glenn and my paper “Quantum Soul” explains).
A second materialist tactic is based on decoherence, which IS an observable phenomenon, in that quantum-size objects do, in fact, get entangled with objects in their environment. But, conveniently for the materialist agenda, it is falsely being claimed that this succeeds in collapsing the wave function. This simply is not true, no matter how many physicist say it is, with many actually believing it. I anticipate that gbob will be addressing this issue head-on soon, so I will leave that task to him, and stop here.