All the bullshit can be explained away if you separate what the NPCs see you as how Blizzard writes them vs. how we see ourselves. They are never going to make any important story device have variable interactions based on our race because it's too much work.
Pandaren will be called funny-looking by inhabitants of Pandaria
Various NPCs will talk to an undead player oblivious to the fact, even in Maldraxxus they comment you look fresh and living.
So Zandalari Troll players rescuing Jaina is just a typical Tuesday around here.
I have alts so I just do the usual headcanon of filling in the blanks of which character did what if I ever overthink it