We shall have to agree to disagree. It doesn't alter the history at all having the name of the dog removed from a gravestone.
I'd wager a hefty chunk of people these days (I'd say 90%) couldn't tell you the name of the dog. But a larger chunk could tell you of guy Gibson, Six Hundred and Seventeen Sqn, and the Dambusters Raid. I know which one I think is more important and relevant.