Very little about this makes Bin Laden a martyr. He has been repressed into hiding for nearly a decade, Al-Qaeda is the smallest it has been for nearly 30 years. They haven't done anything worthwhile for years, and the muslim community is turning on them. He finally gets found, popped off quietly and dumped in the sea where nobody can enshrine him.
How does that make him a martyr? If anything he would be extremely disappointed that his ideals petered out into mere undertones.