Fake implies there is no risk or there are no injuries.
That's not objectively true. Dana didn't want Ronda getting physical in the ring for fear of injury. He wouldn't have done that if he thought there wasn't any risk of injury in a WWE ring.
Fake just means its not an actual fight.
Fans and wrestlers have gotten used to a bubble where they were trained to have a knee-jerk reaction to the word fake but most people outside of the bubble understand thats not the only way to respond to it.
Lets not forget that Dana was responding...he didnt just call shyt fake out the blue, he was mentioned first.