It is unethical.
I think 6s and 8s can clash and it is as much about the 8s behavior as it is about the 6.
What I have always tried to do is use type as a way of understanding and appreciating people for who they are and understanding the differences. I think that might work better than complaining about a particular type and how they act as if the blame is all theirs. I don't really see that as productive.