The fact that you don't understand is the problem. It is also the problem with your main post (I'm talking about the post specifically, not your particular political opinions.) The main post is being downvoted because you fundamentally misunderstand the purpose of the mindkiller sequence, and the political policy/preference of LW. In fact, your post is a prime example of why there is such a strong bias against political articles and discussion.

I wish I had a way to convey the information you'd need to figure it out. Some people just get it, some people just don't get it. I haven't spent much time thinking about why, or how to convey it, but my initial guess is that it wouldn't be easy.

I don't even know what this person is trying to accomplish, other than being rude and telling me to shut up.

Maybe get you into looking at what people are actually saying and taking some time to come up with replies that actually address that content in a meaningful way, instead of just responding with cached thoughts like "Republicans are crazy" or "shouting is rude". And to realize that coming up with thoughtful replies isn't just a question of figuring out the correct etiquette, but requires skill and insight which you might not always have.