Fine, I'll bite...
Yes, RO has death messages, but it's a totally different game with different philosophies on realism. You can't really compare the two. Besides, there are servers who disable them and I agree, it makes the game more realistic.
Yes, ArmA has crosshairs. But then again, knowing where your muzzle is pointing is easier in real life than in game. So it kinda makes up for it.
Yes, ArmA and OFP has third person, but third person is just that: a camera setting. By your logic, IL-2 isn't realistic either because it has third person. Most people don't even use third person for normal gameplay, except for making screenshots or something. It's mostly aesthetic. Besides, there are servers who disable third person.
All of these games are still fundamentally realistic. Those features don't substract from the realism.
Have you ever seen a realistic game that has hit feedback? I haven't, because such a feature belongs in arcade FPSs.
And no, I'm not biased or anything, because hit feedback would suck in ArmA and RO too. Imagine if BIS decided to add that in ArmA 2. You would see the exact same reaction from me, and I'm sure almost every ArmA fan.
But hey, if you believe hit feedback is a realistic feature, that's fine.
All I have to say about that.