I mean, this is the issue with the Avengers in general: Hulk, Witch and Thor are basically god-tier powered, and they have to come up with reasons why they don't just flatten everyone else/solve every problem single-handedly.
Glad to see I'm not the only one who thought so. Holy shit, that was fantastic.
Even better, knowing that they had to storyboard this in all the previous episodes.
I'm over time travel plots because most time travel plots suck total ass. It's very hard to write Time Travel well. There's basically two movies, total, that do it well: Back to the Future -- not because it's realistic, but because it's consistent; and Bill & Ted's Excellent Adventure, because it's probably the most realistic time travel in any movie:
(I have to share this scene because every detail is perfect)
I loved Episode 7 here because it is both -- it's consistent AND it's realistic. There's no gaping plot hole, and it presents a potentially realistic way that time travel could occur.
Nolan would hate it; there are no loose ends, confusing open-ended interpretations.