She has the very unpleasent characteristic of being by far not as smart and charismatic as she thinks she is. What she says is true, or partially true, the way she says it, however, is insensitive at best, it makes her appear not only incredibly arrogant, but dismissive. And people who feel ignored or discriminated against, no matter if thats actually the case or not, get angry, and respond in kind. Instead of saying "I don’t need a 40-year-old white dude to tell me what didn’t work about A Wrinkle in Time. It wasn’t made for him! I want to know what it meant to women of color, biracial women, to teen women of color." she should have said "I'd wish for more women of colour to tell me what they think about "A Wrinkle in Time"!" Your colour of skin has no impact on the quality of a movie, and any movie critic worth his salt will be able to make a fair and thorough analysis of a movie and wil be able to tell you what objectivly works and doesn't work in it. Now, different groups of people will have a subjectivly different opinion on movies, but that doesn't take away the validity of objective criticism.
Subjectivly, for me, she's a terrible miscast for the role. From the trailers, I see no passion, I see no power, I see no authority. I see no joy in her eyes, and from the lines she has said in the trailers so far, I don't buy her performance at all. An actor is supposed to sell me the character he's supposed to play, and she fails to make Captain Marvel, aka Carol Danvers, appealing to me in any way. I've said that befor.
Added to that I have the lingering fear that they'll push her to be the lead in Endgame, coming out of nowhere to save the original Avengers, the ones that have fought for up to 10 years by now, to save the day. I'd like to see the people who fought the fight against Thanos from day 1, so to speak, to overcome him. A final Endgame together. Not some Deus Ex Machina Bullshit that's thrown in in the last 5% of the story.