I have to point out that cannibalism is the consumption of the flesh of a sentient race by another sentient being not just an elf eating another elf otherwise if a black person ate a white person or vice versa it would not be cannibalism. I say this because there is as much difference between someone of Asian or Caucasian decent as there is between the concept of an elf and a human.
That's scientifically unfounded and
incredibly racist.
Actually the comparison holds to a point. They're biologically different (to a degree) and have obvious/and not so obvious difference, but similar enough that the differences arent quiet that important. In this case, I believe, the post was meant to highlight the similarities with humans and elfs that make what they do count as cannibalism.
Though the word "race" in high fantasy has more common with "species" since I'm pretty sure the various "races" don't share common ancestry in evolution.
EDIT: It's not racist to highlight that different races have different genetic traits and that sometimes these traits can directly translate to pros/cons of biology developed based on specific factors over time.
