One fictional character that I think is helpful to bring is Luke Skywalker. It’s not about politeness, but about genuinely knowing why people behave the way they are and then offering them alternative other than QAnon.
Listening to QAnon is a desperate attempt to understand the world after every other mainstream figure of authority failed that person.
What I am talking about is not politeness. Politeness is tone management. The McCain/Romney approach. I respect my opponent, let's find common ground, here's my reasonable plan. That is only decorum. But Trump did validate. That's precisely why he won. He just validated the ugliest parts. When he said the system is rigged, that the elites despise you, that your way of life is under siege, millions of people heard the first person in power say what they felt. The content was often vile, the solutions were fraudulent, but the emotional recognition was real. He didn't win by being polite. He won by being the first one to say your rage makes sense.
The mistake is thinking validation means being nice. It doesn't. It means demonstrating that you understand what someone is actually experiencing before you ask them to go somewhere with you. Trump does this instinctively, he just leads people somewhere destructive.
I don't think I disagree much with what you said, but frankly I think that is a task for other people.
I am exceedingly impatient with this kind of stuff, from people that I think should know better. I try to avoid these arguments now entirely and live in my happy progressive NYC bubble.
No doubt that diplomacy with this stuff is necessary but I don't think that that's something anyone should want me specifically for.