Thread:ARTaylor/@comment-27710776-20180527175742/@comment-122823-20180528182709

It was done on purpose so that Black Widow would be tricked later on. However, it makes little sense for the character and is a plot hole. At that point, Flash would want to not be confused with the actual Spider-Man since there is a giant robot and several soldiers who want to kill the hero. Putting the mask on, clearly intentional on the filmmakers part, makes no logical sense for someone who wants to avoid danger.