No offense, but Doug Ramsey had no business being an X-Man, ever. Who in their right minds would put him on a combat team? He shouldn't have ever left the mansion, or put on a uniform. He should have been a student, period. Ever putting him on the team in the first place practically made his eventual death inevitable.
To paraphrase Seanbaby, the power of talking is not much help in battle, because bullets still kill you no matter what you say to them first. Or in Doug's case, what language he says it in.
Moreover, his vulnerability was a liability in combat that could have gotten others killed. Because rather than focus their full attention and ability on protecting themselves, they had to worry about keeping him safe as well. It played out that he was the one killed, and saved someone else's life while doing it, but it could have just as easily gone the other way. They all should have known better.