J_A_B,
No, that isn't it at all.
The fact is that it has a perk icon, even when it is free in the CT, and that summons people to kill it. It isn't rational, but it is what happens. The icon singles these aircraft out as different and special. Who doesn't want to kill special things. I know that when I see a rare aircraft, say, an F4F or a Hurri, I'm much more inclined to kill it so that I can have one of them on my score card. Drawing fire like this actually prevents me from bringing the aircraft's full potential to bear on my opponent.
As to not wanting to treat every Spitfire as a Spit XIV, well, boo bleeping hoo.
I cannot find any sympathy in me for that position.
I mostly fly an aircraft that is dead if it meets a semi competent pilot in a P-51D (most common fighter), La-7 (4th most common fighter), Typhoon (5th most common fighter), Fw190D-9 (7th most common fighter), P-38L (8th most common fighter), Bf109G-10 (10th most common fighter), P-51B, F4U-1, F4U-1D, La-5FN, Yak-9U, Bf109G-2, Bf109G-6, Fw190A-5 or Fw190A-8. If I don't hold the position advantage at the sart I lose against any pilot with any clue as to what they are doing in all of those. Because of how common those are I have to treat every dot (yes dot) as automatic death if it is above me.
How many of those are aircraft that I'd have to deal with in my prefered 1943 environment? Bf109G-2, Bf109G-6, Fw190A-5. All among the most manageable of the lot.
So your complaining that you'd have to actually treat the Spitfires you fought with respect as they might actually be contemporaries of your P-51D (although 19 times out of 20 they would not be) fails to move me in any way.
Why do you have any more of a right with your $15 to change how I play than I do to change how you play with my $15? You choose to use a fighter that is, frankly, just as good as the Spitfire Mk XIV or F4U-4, yet you don't suffer the penalties that pilots of those aircraft do. You aren't forced to simultaneously fight all enemy fighters in icon range in a fighter that isn't fast enough to run from its most common adversaries.