Outside of the great reply you already received, I think people are mad at the way Dr. Robbie's depression is portrayed? I haven't been paiyng attention to the online discourse, mostly because I watch with my mom since she loves medical shows, so I don't really feel the need to search online about it much, but it's the second time I saw a headline and article about it after the season 2 finale.
It's weird because the show is genuinely good. Dr. Mel King is my favorite character. I wonder if she's autistic IRL, because her portrail is great.