We have to keep in mind that we are not the stereotypical IWM visitor that those who do title these exhibitions are trying to draw through their doors. I reckon that there are still many out there who think that the Spitfire single-handedly won the entire war by shooting down V2s, sinking submarines, dropping atomic bombs and cracking the Enigma in its spare time.
It is a unique occasion to see such a collection of airworthy examples together. And for the less-initiated, they will have a chance to compare, see the differences and perhaps learn a bit about this type's place in history. To each their own.