Well, in case you haven’t noticed yet,in every Marvel MCU movie in what is called Phase 2, someone loses a hand or arm. This is said to be a shout out to the Star Wars: The Empire Strikes Back. Because not only do they lose hand, but its not a big deal. Hands and arms are apparently easy to replace in the superhero worlds. Which leads us to Doctor Strange!
Coulson carries the fad of losing hands to the small screen
“Doctor Strange Review: Give Marvel A Hand!”