This seemingly does not negate everything that happened in previous Marvel movies or the memories of those events, but it does create a separate narrative.
Don Cheadle goes on to say that “time is not linear,” which was my take when I saw the flick.
Though it should be noted that Old Man Cap appearing in the main, present-day MCU timeline to pass on his shield to Sam complicates things further.
Even if Cap fooled around with Sharon Carter in our past, the fact is he then goes back into a new past to start a life with Peggy in a new timeline.