What could affect this situation, like with every single type of situation where we have to have one of these "meaning of X" threads, is that saying the word "dogpiling" tends to distract from the issue of someone getting overwhelmed, in that the majority, or at least the louder side, often gets defensive. Which is unfortunate, because there does need to be some sort of signal that someone is being drowned out. "Dogpiling" is convenient in that it does signal "I can't talk because everyone else is talking over me" but it raises hackles because to some people it carries additional connotations or denotations. I'm not sure there are any words that everyone agrees has the desired meaning and exactly the desired meaning. Perfect is the enemy of the good, but is there at least a better?