I glanced at Ikeda & Jefferys, and they seem to explicitly not presuppose MWI:
our argument is not dependent on the notion that there are many other universes.
At first glance, they seem to render the fine-tuning phenomenon unsurprising using only an anthropic argument, without appealing to multiverses or a simulator. I am satisfied that someone has written this down.
I glanced at Ikeda & Jefferys, and they seem to explicitly not presuppose MWI:
At first glance, they seem to render the fine-tuning phenomenon unsurprising using only an anthropic argument, without appealing to multiverses or a simulator. I am satisfied that someone has written this down.