It is quite difficult to figure out which multiverse advocacy group is the most impossible to forgive. Certainly the so called theoretical physicists are high on the list. But are the philosophers any less guilty? At least the physicists have the excuse that they were never required to take courses in the history and philosophy of science and, in true 20th century camaraderie, were rewarded for playing the game and forgetting about the problems that they were actually supposed to solve.
A professional philosopher of physics, on the other hand, should be able to dismiss the objective, observer independent multiverse with three words that they learned in kindergarten: I am thinking, therefore I exist. Descartes, and many others, must be turning in their graves, to see science so debased.