Has anyone read this?
https://screenrant.com/agents-shield-season-5-time-travel-explained-monolith/
It makes so many assumptions, like they've already traveled back to the past and failed and they brought the agents to the future with the intention of killing Daisy. Where did the episode imply any of this?
This pod is obviously not following the Back to the Future theory of time travel. Think about it. If they found a way to stop the destruction and went back in time, what about the ethical implications? All of the people in the future and their lives would disappear and be replaced with a functional Earth. Why would Mack and Flint be rushing back into the Lighthouse to protect everyone then? Traveling to the past would just change that future so that should be the higher priority.
Instead, you can go by the Dragon Ball Z time travel theory. Each time you time travel, it creates a new timeline, however, you can travel back to the starting timeline without creating a new timeline.
It would go like this
Timeline A: All events are the same as we know before S5 until ~2018 when the event happens. The flashbacks from this episode occur in this timeline. Fitz and Simmons create schematics for time machine. They die, and Owen, Deke's father, creates it. In 2091, the agents are pulled to the future from timeline B and the events of S5 happen.
Timeline B: The MCU as we know it up until 2018. Agents are taken from this timeline to timeline A. Fitz takes the long way to 2091.
Now, the problem is that Fitz reaches 2091 and his friends are there. So, where did those come from? Is there a possible third timeline?
Timeline C: Same as timeline B, except agents from C are taken to B.
The whole reason I say this is because, like Fitz says, time is fixed, but the timeline theory can explain things such as my ethical question. Why fight in the future if changing the past will change the future in that timeline? The timeline the show is in right now obviously won't change, but they can help those people and get back in time to save their own timeline.
Then we have the placement of things such as Fitz' postcard. Also, if Fitz "took the long way" then going by the Back to the Future theory, then there should be no Fitz in the flashbacks. The time machine wasn't created or designed by him in the timeline the show is in.