I think it’s fair to say that people, for the most part, when addressing a topic that they are invested in with considerable emotion, tend to oversimplify, polarize and in some cases, do everything in their power to make their point an emotional investment for those they are engaging with, as well.
And, because I think it matters, when people are arguing or just discussing things that are associated with strong emotion, it isn’t necessarily the same emotion they appeal to if when seeming to intend evoking a reaction from someone else.
The person who has anger attached to a subject could be appealing to someone else’s feelings of fear, for example. Emotion isn’t rational. Hence, it can’t make rational decisions. It is, however, amazingly effective in triggering emotion in other people, and much to other people’s dismay and surprise, at times. When someone is arguing with you or even just taking a very forceful position that seems polarized, it’s not a bad idea to determine if the person is attaching an emotion and which emotion is at play. The reason for doing this is to prepare yourself and brace against being pulled away from your own attempts to remain rational and reasonable by appeals to your emotion. Because it happens suddenly like a club over the head. This can be circumvented when you assume the risk is present and watch for it with every statement the other person makes.