Just to be clear because I know how good you are at missing the point. For the first 40 years after the Law was given the following three texts were the ONLY references to eating an animal found already dead.
If an animal that you are allowed to eat dies, anyone who touches its carcass will be unclean till evening. Anyone who eats some of its carcass must wash their clothes, and they will be unclean till evening. Anyone who picks up the carcass must wash their clothes, and they will be unclean till evening.
Lev.11:39,40
Anyone, whether native-born or foreigner, who eats anything found dead or torn by wild animals must wash their clothes and bathe with water, and they will be ceremonially unclean till evening; then they will be clean.
Lev.17:13-15
Direct Aaron and his sons to deal carefully with the sacred donations of the people of Israel, which they dedicate to me, so that they may not profane my holy name; I am the Lord. Say to them: ... That which died or was torn by wild animals he shall not eat, becoming unclean by it.
Lev.22:2,8
For four decades these were god's only instructions regarding eating an unbled animal found dead.