There is more discussion on social media about the phenotype of the actors than the show itself, showing that there isn't much interest in it. Which means that their marketing and advertising are not getting support for the Amazon "brand" of Tolkien.
But the more ironic point behind the video is that it shows a new wholly made up group called the Southerners and none of them are diverse. No representation of Harad and the Haradrim who were supporters of Sauron and obviously included various diversity in phenotype. Which means they just randomly inserted 'diverse' skin colors among a couple elves, a couple of dwarves and maybe one or two Numenoreans and called it a day while ignoring Harad and the Haradrim all together, not to mention the Easterlings.
LOL!
Again, going to my point if they were serious then half the Numenoreans would be black or mixed race, another 1/4 would be Asian or mixed and the rest European. And there would be a whole group of black Elves and not just one or two plus various and assorted black dwarves. But they didn't do that now did they. Because at the end of the day, that would show a true commitment to diversity, while these chocolate sprinkles can be ignored by any other studio as 'non canon'.