I disagree with the author , The Many Worlds Interpretations adds more baggage not simplicity. You have to all of a sudden add an infinite number of new universes. That's a lot of baggage. and a lot of new rules for how many universes are enough. At the quantum scale the states of each and every particle in existence can be said to take alternate universes so how is it decided how many are enough to complete the set for each particle. Add that the fact that the particle may actually be an excitation of a field and then that adds even more baggage or should I say garbage...which is what it probably is.