I understand. I do see his point htough. The Matt Damon movie wasn't marketed as some revolutionary breakthrough in cinematic history. The Black Panther blatantly marketed their movie around it. It was the primary focal point.
However some of their marketing was relatively factual, it was the first big production Marvel film with a predominantly black cast and all black leads ........... did that effect me? not in the slightest.
African Americans were happy about it, good for them, why should they not enjoy it? Army vets like the Punisher and Cap America, Feminist types like Jessica Jones.
Why should it bother me that there is niche marketing for each character because Marvel is diverse? they'll be making the same type of marketing for the up and coming Captain Marvel as the first woman lead.
Now if the film is one big virtue signalling propaganda tool for feminism then yes it'll bother me, I want to be entertained not bashed over the head with politics..........but it won't be, marketing is marketing, but I'm only interested in what the film delivers.