I can see your perspective, and it's pretty reflective of that of the author.
However, in reality, I don't think her words empowered the expert speaker at all but simply served as a check on the moderator's exuberance.
Those who actually benefitted were the audience---and we the public who get to see the video afterward. The moderator was handling the situation poorly and needed to allow the expert to speak which is what the audience paid for, and everyone is more interested in hearing.
I think the best panels are where the experts talk amongst themselves, and moderators only serve to derail heated arguments that are consuming the allotted time.
I hate what this PC culture has become. You have to watch yourself so carefully or you will get publicly shamed like this. And if someone over reacts there is no consequence. Its a race to the bottom.
How big headed is this person that she thinks her input was more important than that of the person she's claiming to uplift.