No, it’s not. If you contend otherwise, please provide proof of the attributes and personhood of someone who does not exist.
Being dead means you do not exist. Even the word “being” really doesn’t belong in the phrase, since present-tense states of being are only open to things that actually exist. Again, if you contend otherwise, please provide proof of the attributes of these “dead people” other than the mere physical facts of their corpses. If you cannot do that, then all that exists it the corpse, and there is no personhood attached to it, of any sort.
If the research makes obvious sense due to its beneficial nature, then it’s not at all a contradiction to say that it’s a valid exception to mandatory donation.
What is a corpse besides a body that has stopped functioning? Take a car and throw sand in the engine and other moving parts. Is it still a car? Well, not in the sense that a car is a thing that transports a human from point A to point B. But all the basic parts are there. There is no magical essence that differentiates a live body from a dead one; it is a combination of factors, ultimately chemical and electrical in nature.
You’re still missing it. The original argument was that the dead have no rights, and that saving a life is a greater good than satisfying any emotional objections by the family.
Because suitable organ donors are so rare (Wikipedia says <3%), but research corpses are not, a potential donor that requested research should–by the original argument–also have his request ignored. Research departments can get all the corpses they want from the other 97%. But that 3% is very precious, and a state that claimed rights to all bodies should do everything it can to use them for transplants, instead of lesser applications (or applications where the exact mode is death is less critical).
The difference between a human being and a pile of meat and bone. Talking about a person who is also dead is a contradiction in terms.
Not so. Donating a corpse to research also has positive benefits for mankind that are wasted if the corpse simply rots in a hole. If your argument is that one benefit must outweigh the other, then we can say that any corpse slated for medical research must first be rejected for potential organ donation, otherwise organ donation overrides it.