This is all old news. If I have time I'll look it all up again.
It's not all that uncommon for babies to eat their own poop, ya know cause they'll grab whatever and put it in their mouth.
Ergo, "is it safe to eat poop" is a more common search phrase than you probably realize.
Continue down the rabbit hole from there.
It's not uncommon in nature at all.
All its really doing is taking food that's been processed once and running it through the mill another time.
That's my story and I'm sticking to it.