Just joined this sub, can someone explain the Christi hate to me?

Obviously Abby is a loser and a nightmare. After Chloe and Christi left, the show was not the same. I'm definitely biased in favor of them and Holly and Nia, but I thought Christi was an okay mom and did a good job defending her kid, which should have been her #1 priority. I understand the criticism of her pep talking methods, but I thought she was the most TRULY supportive of her kid alongside holly, whereas someone like Melissa or Jill supports their kid by pushing them to do well.

What do you guys think? I'm very much open to having my opinions changed. I feel like I'm missing something