This is my new canon.No one survived Tarsus V.
I think the script was just that they killed half the colonists, so that that the remaining food would last twice as long, but some of us sat through The 100, so you got to wonder if the plan was to eat the dead, if the relief ships had not arrived early.
Kirk definitely ate a person.
Mentally scared to an emotional death at such a young age, nothing later that would ever happen to Jim Kirk could move him for longer than 12 minutes.