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?

Multiverse of Madness? Why the Marvel Cinematic Universe no longer exists in perfect isolation, Movies

Spider-Man: No Way Home plot holes addressed by Marvel writers

How Spider-Man: Far from Home Was Made: Crafting Those Big Twists

Spider-Man: Far From Home (Film) - TV Tropes

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

Spider-Man: Far From Home's big trailer reveal might not be what it seems

Does Spider-Man Far From Home introduce the multiverse into MCU?

How Mysterio Evaded Death Itself in Spider-Man: Far From Home

Spider-Man: Far From Home' Original Twist Revealed Mysterio as Skrull – IndieWire

Spider-Man 3 Makes Far From Home's Fake Stories A Reality

Spider-Man: Far From Home director breaks down the biggest twists and spoilers