8.2.5 spoiler question.

So as the title implies i have a question about the events of 8.2.5. been trying to see if others have asked but i haven't been able to find anything, however i do apologize if this has already been asked.

I should also add i haven't played through it yet, but have watched most if not all of it online.

After the cinematic Sylvanas flies off and the players that followed her go along and should now be branded traitors to the new Horde. How does that actually work gameplay wise. you can't be locked out of all of the major cities, but at the same time ignoring the fact that you literally just killed innocent civilians can't be ignored.

so my question is how are these characters handled in game?