I want to second KathyPartdeux here. I think we can pretty confidently say that he does care about changing people’s minds and he thinks he’s really good at it. Remember: why did he take all the interviews with Bob Woodward? Because he thought he could sweet talk Woodward and get a positive book released. I’m pretty sure he genuinely believed he didn’t need to prep at all and he could waltz in and put on a performance that would put him up in the national polls. And that you’re also right, his main plan is to discredit the election and either sue his way into office or through encouraging domestic terrorism.
I also think he’s got narcissistic personality disorder with a side helping of sociopathy and psychopathy, and has a blind spot a million miles wide with regard to who he can win over and how to do it. He didn’t learn a damn thing from the Bob Woodward book and he never will. This is also why I’m generally optimistic it won’t work: he’s too incompetent to actually pull this off because he’s going for the look rather than the substance, and no one is doing that work for him.
But we’ll just have to see. And everyone should be preparing for the things he’s saying out loud in the open, because even if it turns out alright, it’s going to be a rough ride.