Okay,
@Chaosmancer didn't say that, though. You're jumping to conclusions and making slippery slope arguments.
And, no. When you include dragons as people, that doesn't suddenly make aliens that depend on taking advantage/eating humanoids to exist be people. No one thinks that Aberrations should be people (except flumphs, obviously), and stop pulling out strawmen.
Also, I agree with them. You cannot point to an intelligent group of people and say that they're not people because of their culture. You can do that based on how they reproduce and live. Mind Flayers have to eat brains to live, which makes them not people. You cannot be a person if you do that as a species to live.
Also, answer my question. What is your definition of person, and how does it invalidate Orcs, but still allow elves and dwarves to be people?