Then he had to go through the ordeal of a ritual (mikveh) and that wasn’t easy either.
Have a bath & change your clothes - done.
Kill and eat an animal unbled and YOU DIE
Eat an animal found already dead and YOU WILL HAVE A BATH
How can you return the life of the animal to god if you didn't kill it? This is why there was no penalty. It's so bloody obvious! Countless children have died because of the stubborn dogmatism of people like you.