No, treason was erased.
Either George Washington -and- Jeff Davis were traitors...or they were both Jeffersonian Americans exercising their natural right to throw off the government when it went to their throats.
For good or ill, The Confederates lost the military conflict, allowing their history to be written by their enemies.
'Treasonous' Benedict Arnold would be an "American Hero" today had the King been victorious in his war to put down that rebellion, and 'the father of our country' Geo. Washington, would be synonymous with treason.
Same as the legal tradition, "Loser Pays."