I'm firmly of the opinion that if Belkar's death was dramatic in either direction, the story would have been better served by not warning us. All of the Oracle's predictions would only have served to undermine one of the comic's most impactful moments.
However, if the manner of death is "unworthy" then all the warning we've had is creating drama rather than lessening it. Since the audience has already accepted the death then we don't need a significant ending to justify it.