I pretty much agree with all this. There is no shame in being biased against stupidity.
You are not dealing with stupidity. The science on liberals shows them to be as intelligent as liberals. I have said so many many times, but do liberals hear it? No. Liberals are blind to the fact that conservatives don't reason with their intelligence, they use it to protect their egos from truths that are painful to them. I believe this is a survival mechanism that allowed them to survive a childhood forced them to conform or die. But whatever the cause the fact is documented by neuroscience. So you want to ban folk who are stupid who are not stupid. Doesn't sound right to me.
As to their aggressiveness. You would be aggressive to if your felt your survival was at stake. If conservatives have an enlarged fear center, the right amygdala, as shows up on brain scans of people who self report as conservatives, then it is no great leap of logic to imagine that they are more effected by fear, and fear and violence, fight and flight, are bed fellows. Nor is it any surprise that conservatives would drive liberals crazy, leaping so to speak, without looking.
But the neuroscientists suggest that an instant ability to react to in some situations, instantly has survival value, just as a slower dis passioned examination of how to respond intelligently in other situations makes better sense. So it seems that if we were to truly ban conservatives, we would lose valuable survival abilities as a group.
The danger comes in other areas of difference two. Conservatives are better team players, great when we are in competition against some external threat and dangerous when there is none and the conservative team turns against liberals.
This is the situation as I see it. The challenge, then, is how to reach conservatives and notify them they have become dangerous to themselves, since they can't see it with logic and reason.
One suggestion propounded by folk who study this is for liberals to get with the program as to the real nature of the problem and find ways to communicate with conservatives. One suggestion is that they may be reached by stories, another that condemnation of their demonization of other teams may be required given that distust, and theoretically, by extention, self disgust, is in their nature, one of the many moral sensed they have that liberals don't so much.
At any rate, it seems to me that this they are stupid mentality is just part and parcel of liberal inability to deal with the fact that conservatives are impervious to reason. Folk who want to teach pigs to fly are barking up the wrong tree.
If the objective is for the segment of the population, only, who can reason be welcome to the forum, fine, but that would be a big mistake, in my opinion. I can go with demanding that they have to state their reasons why they feel any opinions they express seem right to them, not just unload their raw opinion because that's all it is and totally useless to others, because I believe they will soon be met with the fact that their reasons are no reasons at all but purely rationalizations of defended ego identifications. This is how I learned to think such as I am able, by questioning everything I thought was real, trying to logically prove it.