Define "mad". I've watched it (arrr) myself and The Barbie movie is very political, despite them completely hiding it in the trailers and the promotional material.
Fervent political media tends to rile people up, especially when it's very one-sided. I presume you haven't seen it and think people are upset over a light hearted comedy.
Why would a knee jerk reaction be any indication of misogyny? The movie is very antagonistic towards men. The proposition that having a negative reaction to that is misogyny is absurd.