And I agree that no MCU movie has ever been a direct adaptiona of a comic storyline. Like I said in an earlier post, I'm doubtful they could do it in a 2 hour movie even if they tried.
My post was a direct response to someone who said they wanted to see an adaptation of that A Nation Under Our Feet ... and I did in fact say it likely wouldn't be a direct one. Though it certainly can explore some of those themes and use some of the scenes. But if you'd rather talk about a different story to adopt, then by all means talk about that instead. No one is sticking a gun in anyone's head and forcing them to discuss Coates story in the MCU.
As far as the notion of people being scared of an african society and that being a reason it gets destroyed ... Asgard and Attilan haven't faired to well in the MCU, nor have their counterparts in the comics over the years. Or Atlantis or Latveria or any mutant nation for that matter. People on Krokoa would be wise to invest in insurance right about now, cause that's probably not going to end well. Comparatively speaking Wakanda probably does better than most of its fictional peers. I think as far as fictional countries go, in comics they tend to get destroyed a lot. That's just the way it is.