I completely disagree. I was Op-Up'ed a number of times as a Plat and, once I learned that economy was overbooked, I always made sure to make myself known to the gate staff and ideally the concierge. They typically do the op-ups shortly before closing the door and there's usually other things going on so the concierge isn't looking to make their life more difficult if they have an eligible Plat standing nearby. And I usually was able to get my Silver colleague u/g'ed with me (in fact, they would ask if I was traveling alone).