WandaVision evolved Wanda Maximoff’s status within the MCU — and even turned a running Spider-Man: Far From Home joke into some shrewd foreshadowing. Played by Elizabeth Olsen, Wanda debuted alongside Aaron Taylor-Johnson’s Pietro Maximoff during Phase 2. Though initially antagonizing The Avengers, the duo saw the error of their ways and switched sides. Quicksilver ultimately gave his life in service of that redemption. Meanwhile, Wanda lived to fight more battles alongside Earth’s mightiest heroes, suffering further traumatic losses. Across its episodes, WandaVision has been a deep exploration of that accumulated grief. In the process, however, the origin of Wanda’s powers was retconned and the MCU finally gifted her the name Scarlet Witch.
WandaVision episode 8 also briefly touched on Agatha Harkness’s own past. Played by a de-aged Kathryn Hahn, Agatha was glimpsed in a flashback to 1693 Salem, Massachusetts. The scene delved into an untapped era of MCU history. It also expanded upon the existing magical community established by Doctor Strange. With both Wanda and Agatha now operating in the open and fully aware of each other, the stage was set for a huge clash in the WandaVision finale. It was previously confirmed that the fallout of such events would lead directly into Doctor Strange in the Multiverse of Madness. However, it was also revealed that WandaVision was set before Far From Home in the MCU timeline. As such, elements of the Spidey sequel could retroactively be viewed through an entirely different lens.
For instance, after witnessing Mysterio battling the Water Elemental, the class of Peter Parker (Tom Holland) assembled to discuss the situation. Unaware that the entire thing was staged, teachers and students alike theorized regarding the nature of the threat. Flash Thompson (Tony Revolori) relayed a Buzzfeed suggestion that nodded to the comics and it being a hydro experiment gone wrong. Ned Leeds (Jacob Batalon) believed it had to be aliens. When asked by Mr. Harrington (Martin Starr) what he believed to be the cause, Mr. Dell (J.B. Smoove) offered: “You know, being a man of science… witches!” He was later spied by Peter to be researching the history of witchcraft online. Finally, when Mysterio unleashed his final attack on London, Mr. Dell loudly exclaimed, “The witches are back!”
On the surface, it was a throwaway recurring joke. Retroactively, however, it could’ve been foreshadowing and a sign that Mr. Dell was operating on more information than the others. Throughout WandaVision, the response to the Hex has mostly been encompassed by S.W.O.R.D. Part of their protocol was no doubt keeping the press away. However, just how successful could such an attempt actually be? After all, the border of the reality bubble is stories high and, as of the latter half of WandaVision, colored a bright red. Even accounting for the memory wipe of those with a connection to Westview residents, it would be glimpsed from miles around even just passing. Even if many details were kept under wraps, like WandaVision episodes leaks themselves, something was bound to slip through. That could be either to the likes of J. Jonah Jameson or even just the internet itself.
Whether or not it was merely viewed as online conspiracies would obviously have depended from person to person. Still, based on Mr. Dell’s research of witchcraft, he seemed to get most of his information from online imgs. Therefore, it’s not outside the realm of possibility that part of what informed his outlandish belief was reports of what transpired in Westview. Some of that leaked or openly conveyed information might have even mentioned that battling witches were at the center of the events.
Like the fact that Nick Fury apparently knew about the WandaVision anomaly, parts of the public might have had pockets of knowledge too. As such, it might not have actually been all that outlandish after all, that Mr. Dell believed witches responsible for other reality-bending, seemingly dimension-breaking disasters. And fans will likely feel more richly rewarded upon rewatching the MCU — especially if they go chronologically from WandaVision straight into Spider-Man: Far From Home.