A ref's first responsibility is fighter safety, a ton of fights have been stopped during arm bars without the fighter tapping. Sometimes a fighter has to be protected from themselves because a fighter will want to keep going no matter what. It's like the ref and the ringside doctor in Montreal that allowed Koscheck to keep fighting with a broken orbital bone, look at Kos in the 2 fights since, every time he gets hit in that eye he has problems.
In the case of this fight Miesha wasn't going anywhere and the ref could have stopped further damage.
Imagine if the ref didn't step in with this one right here....
Cyborg didn't tap to Diaz either, and Cyborg never contested it or was mad
it happens all the time, nothing new, it's the ref's job
