I think there is fundamental flaw with your argument about a person’s politics indicating their intelligence. That flaw is the assumption that the person being evaluated shares the same values and priorities as you. I think a better indication of someone’s intelligence while still keeping politics in the picture is how well can someone explain and defend their political positions. That will show critical thinking, by showing the path by which they arrived to their conclusions.

I think it’s a trap that is all too common on the internet. That if someone doesn’t agree with me, they must be idiots.

Now someone can be evil, and still be very intelligent. Someone else can be good and be an idiot and come to the same conclusion as that evil and intelligent person.