It's just the difference in how we view things.
I don't think anybody really enjoys and likes to see blood.
Think about boxing or fight tournaments - the blood, sweat, bruises and etc. may look cruel, and is cruel in a way.. but it's also a testament to how vigorously the two contestants clashed, giving all they've got to win the fight. Only a psycho would love to watch such things for the sake of blood itself.
I think people feel more or less the same way concerning air combat - sure, there may be people who like bloodied cockpits and stuff just because it stimulates their sadism, but frankly, I think most people like that sort of detail portrayed(of course, to a certain extent only) in regards to immersiveness.
Just today, in a short offline testing, I attacked the enemy base, received some bad hits, and RTBd. I went to the externals, and saw how badly my plane was damaged - holes everywhere, blood on the windows.. but it also made me feel good and immersive, a sort of a relief, that despite all the dangers and damages, I've made it back home alive. It urges for role playing tards like me to really feel for my virtual pilot.
...
But of course, since not everybody shares this view, a "gore" box under the preferences section as an option would be reasonable. I don't think having no gore would provide that much of an advantage to be viewed as 'unfair'.