Warning! Spoilers for WandaVision episode 4.
Marvel Studios is using the MCU's Mad Titan.
In of the MCU timeline, the events of WandaVision take place mere weeks after the final battle of Endgame and Iron Man's death. This means that it's set earlier than Avengers: Infinity War and his eventual defeat in the sequel. Episode 4, titled "We Interrupt This Program", opened with Monica Rambeau reforming after getting snuffed out of existence due to the Mad Titan's decimation, and unlike how they played it for laughs in the Jon Watts and Tom Holland movie, it's clear that while the reverse snap did bring back those who turned to dust five years ago, it also resulted in some serious problems.
Interestingly, however, despite WandaVision painting a more serious picture of what happened in the real world after Captain Marvel's best friend, Maria Rambeau, who died before she returned.
It's worth noting that Thanos' snap is officially called the Decimation by Marvel Studios, but it's rarely called that. Instead, it's mostly dubbed the snap based on the gesture Thanos made to accomplish what he wanted to do, although he didn't need to make any physical motion to will the Infinity Stones to do whatever he wanted. The problem with this is, not everyone in the universe knew what really caused the Decimation. Aside from the Avengers who fought Thanos and the viewers, the rest of the MCU isn't aware of what exactly went down in Wakanda that caused people to disappear and then five years later to re-appear. Calling it a blip gives the public something to call it without knowing what exactly happened.
Still, WandaVision calling Thanos' snap and the subsequent events tied to it the blip sounds inappropriate. Unlike Far From Home, the show actually tackled both direct and indirect real-world repercussions of the Mad Titan's actions and the Avengers' countermove to overturn it. Whether or not people will actually start referring to the Infinity Saga's game-changing event as the blip is unknown at this point, but if they regularly use the term in the MCU Phase 4 and beyond, it might just catch on as the world tries to put behind it an event too big to fully emotionally reconcile.
