It's not like it's a new thing for "outsider" candidates. Ron Paul had the same thing happen with Fox, and while it seems like forever ago now, Trump was basically at war with Fox until it was clear he was the favourite to win the nomination.
Interestingly, that NBC producer's mistake was explained... but not in a good way for NBC. There were two separate NBC videos put out with that graphic on it, and in one, Yang's name appears, and in the other, it doesn't.
Why's that bad for NBC? The one where Yang's name appears was the first one. In the subsequent one, it's gone. They literally
removed his name from a graphic he was on.
https://twitter.com/user/status/1169816832275931137