I think Emily asked a good question. And I've been wondering this myself. What is "martial"? Also what is "art"? Are the two really different? Are they really the same?
I don't believe I have to learn Daito-Ryu to learn Aikido. They are two different things now. I'm sure there are people who forget about the "art" as much as there are people who forget about the "martial." Whatever those two words mean.
I really don't see this as a dilemma. People will take from the martial art they train in what they need from it. Some people don't need the martial, others do. Who's to dictate what aikido is to mean to us? I respect the "artist" as much as the "martialist".