OK, I can't be bothered checking this on Wiki but my recollection is that he was pretending to be Xavier, right? They wrote Xavier out and then they got cold feet and said, 'No, wait, that was someone else disguised as Xavier. And now he's dead.'
Assuming this is broadly correct (it might not be) then I say, yeah. He gave his life for the X-Men. That's gotta count for something. Give the guy a break.
"The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all."
-H. L. Mencken