It's not just the way time travel works, it's also the whole explanation as to how time travel was even possible in the first place. The show clearly didn't have any consultation from Marvel Studios and did their own take on time travel as a whole, and I don't think Kevin Feige will prioritize their version over some very important plot points established in the movies, like the fact that Tony Stark was the person who cracked the mystery behind time travel, something the show not only failed to acknowledge, but contradicted it by saying it was someone else who did it.