Yes and no. A lot of nations handle their civil wars as "everyone was brave, and its all part of our great national story" which is basically how Britain handles the English Civil War. You do need some historical distance and the fading of the issues that led to the conflict.
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not feasible with the US Civil War, since a lot of the US is descended from the people who were treated as property and that was the issue that sparked the war

the number of people in the UK who really care about Cromwell’s religious doctrine is small

anti-Black racism still a huge issue in the US
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that is really only possible when you are not in a civil war because the side that started it believes "I should get to keep doing top-three all-time crimes against humanity for the sole reason that I do not want to get a job"
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