Yeah, night soil, icky icky icky... Not a good thing and not at all the same thing as composted. Spreads disease and really doesn't do as much for the soil as composted manure. Runoff from raw manured fields is nasty.
This is one of those issues where you will always have people on either side of the line

No worries, its what makes us human
Oh, but animalfarm, the folks at the humanure hacienda (Jenkins family) compost meat all the time. If they have a dead critter, they throw it into their one compost pile. They rotate through 2 piles, 1 per year for a family of 4. Their thoughts are that if it died from a disease, instead of leaving it for another critter to eat & get sick, compost it and kill the disease. They keep a wire cover over their compost to keep critters out.
Think about the forest floor. Birds & small mammals die, they fall the leaves and get covered by more leaves, branches & such. Bugs come in, eat what they want and the rest...rots. Nature doesn't even heat up her compost, she just ages it

Isn't the best soil you have ever seen under old trees, where stuff has been piling up for years & years? There
were dead critters in there at one time.