returning to the present as a peaceful old man who lived a full life. For many, this was the perfect conclusion to Steve's arc.
The image of Steve and Peggy dancing to "It's Been a Long, Long Time" is extremely cathartic, yet the time travel shenanigans of Endgame raised some big questions that continue to be debated to this day. Surprisingly, the film's creative team doesn't see eye-to-eye on the way things turned out. Endgame directors Joe and Anthony Russo maintain Steve was Peggy's husband in the prime timeline all along. The writers understand not everyone at Marvel agrees with their interpretation.
In an interview with Canada.com, McFeely once again touched on this subject, itting he's unsure if Marvel considers their interpretation official canon:
It depends on what story Marvel wants to tell going forward. I don’t know if Marvel wants to tell any more Captain America stories or if Chris (Evans) is up for it. Do they want to tell an alternate timeline story? Chris and I are partial to the idea that Steve is part of a strange, unique time-loop where he has always been there. The husband that you very purposefully did not see at Peggy’s bedside in Winter Soldier is Chris’ Steve. We have always thought that he was her husband. The movies you have been watching follow a line where he always goes back. To be fair, not everyone agrees with us. I don’t even know if Marvel agrees with us. But that’s what we think.
It's surprising that Endgame's writers and directors have varying opinions on what happened to Steve Rogers. The finale of a key character's story arc seems like something that would have to be agreed upon by the principal creative voices of the film. There's nothing wrong with a little ambiguity sometimes (see: Endgame's time travel was confusing enough because Marvel changed the rules. It would have been nice to have a straightforward response to Captain America's fate.
What'll be interesting to see is if Marvel opts to revisit this at a later point or just leave it be. It might be better (and safer) to go with the latter. Regardless of which interpretation one sides with, it's universally agreed upon Steve got the ending he deserved, and to bring Chris Evans back for another project would run the risk of mucking that up. It's possible Marvel could come up with a compelling story to lure Evans back (after all, Natalie Portman is returning for Thor: Love and Thunder), but Evans is looking forward to beginning a new chapter of his career right now and Marvel has a lot of exciting things on deck. Perhaps Marvel should let fans believe what they want about Endgame and not definitively canonize one explanation over the other.
Source: Canada.com
