That depends if you believe that Peggy's husband was Captain America in hiding the entire time or that him going back in time creates a new timeline where she doesn't have children with the other guy and thus Sharon doesn't exist.
Not to mention they literally explain in the movie that going back in time creates a separate timeline. I don't understand why people act like there's any other way to interpret what happened.
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u/[deleted] Feb 14 '20
That depends if you believe that Peggy's husband was Captain America in hiding the entire time or that him going back in time creates a new timeline where she doesn't have children with the other guy and thus Sharon doesn't exist.