Lev. 17 speaks about restoration not about permission - Fishy
Verses 13 & 14 state very clearly that anybody who hunts an animal for food and does not bleed it will be cut off. I presume you understand that to mean capital punishment. There is no provision for "restoration".
Verse 15 says that anybody who eats an animal that dies of itself will be unclean until the evening. Nobody gets stoned to death. The only requirement is to have bath and change clothes.
Why is there a difference if as you assert, the blood of an animal that dies of itself is just as sacred as one that has been killed?
I will keep asking you that underlined question until you answer it.