Riley Dove raises an interesting point.
Even if we accept that it's a good idea to fly the rarer warbird types, should we fly the most historic examples? A Battle of Britain Spitfire, for example, rather than a PRXIX or a non operational Mark IX?
How many of the 'punters' know or care about the difference?
If we had Guy Gibson's Dambusting Lanc should it be flown, or kept safe in a museum?
I don't have a firm opinion either way, personally.