Is Spider-Man Far From Home lying about the multiverse?

Trailers for 'Spider-Man: Far From Home' suggested that Mysterio (Jake Gyllenhaal) hailed from the greater multiverse. Were they lying?

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Did Mysterio lie to Peter Parker about the multiverse in Spider-Man: Far From Home? If so, why? - Quora

The Spider-Man: Far From Home Trailer Just Revealed A Game-Changing Truth About Mysterio

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Andrew Garfield Said It Was “Stressful” Lying About His “Spider-Man: No Way Home” Cameo

Does Spider-Man: Far From Home take place in an MCU multiverse? - Polygon

Spider-Man: Proof Mysterio Is Lying About The Multiverse In Far From Home

Spider-Man: No Way Home - Wikipedia

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