2018's Halloween acted as a direct sequel to 1978's Halloween, ignoring decades of canon in favor of a fresh follow up to the classic slasher film. While the film had a few easter eggs, as well as jokes, about the past sequels, the new Halloween did continue the long tradition of implying Michael Myers was not truly dead, leaving room for another follow up.
At the end of the most recent film, after Laurie and her family have trapped Michael in her house, setting it ablaze, they flee the scene, assuming he would die; however, the film ends with the heavy breathing of Michael, implying he's yet to perish. With the first teaser trailer dropped for Halloween Kills, it is confirmed that the Shape has another chance to get out alive, with paramedics rushing to the burning house and inevitably his rescue, much to Laurie and her family's dismay.
While 2018's Halloween adamantly was against being a repeat of Halloween 2, Halloween Kills is already feeling reminiscent of two past sequels, whether this is intentional or not. H20 saw, similar to the recent film installment, Laurie supposedly bringing an end to her tormentor; however, Laurie beheaded Michael in the 1998 film, which seemed like a guarantee end to her nightmare.
Four years later, audiences would learn that once again Michael was not dead. While it's common knowledge amongst fans of the franchise that Michael is the embodiment of evil and near impossible to kill, surviving injuries that would see any normal person dead, his consistent survival is often unexplainable, making him an unstoppable, supernatural force. Halloween: Resurrection, on the other hand, decided to go in detail about how Michael made it out of H20 alive.
Before Laurie hijacked the truck that had Michael in it, the Shape swapped places with an unconscious EMT, forcing him to wear the iconic mask; therefore, the person Laurie killed wasn't even the Shape. A trick like this makes no sense for Michael nor the franchise because the Shape, while he is a clear threat, is not the smartest slasher in horror history. He acts on instinct and adapts well to a situation; however, he has never shown a need to devise a plan to survive, let alone the ability to come up with a plan like this.
Furthermore, the EMT, while Michael knocked him out cold to swap places with him, was awake when Laurie pinned him between the truck and tree. He also had his hands free at this time and is aware Laurie believes he is Michael since she calls him the Shape's name and he gets a chance to feel the mask on his head. With this in mind, the EMT could have revealed he was not Michael, but he did not, making this scene even more ridiculous.
The teaser trailer does not show whether or not the EMTs will be Michael's saving grace, if he will come up with another plan or if he will do what Michael does best, playing it by ear and taking as many lives as he can. Hopefully it is the latter, which would be more in character of the Shape since he doesn't need help from anyone, nor does he need a grand escape plan to survive what would kill a normal human because, "you can't kill the boogeyman."