Oh, you read the article where a mother repeatedly says her 11 year old daughter is just like a crack addict because she prefers being on her phone to making her bed? The article where the mother admits to going into fits of rage and punishes the 11 year old child for doing nothing that isn't normally tolerated even in this already very strict household? The article where this mother of an 11 year old blames nothing but the phone for the fact that this girl entering into adolescence behaves differently than when she was a child?
No, this article was written by a narcissist who can't handle her little girl growing up and rather than dealing with it in a healthy way is instead raging against an inanimate object.
Having never been an 11 year old girl in a pandemic, I can't really speak to what "normal" is. Based on the the girl's behavior as described in the article, it certainly has had no noticeable negative effects.
It's not all their fault. They're fighting an asymmetric war. Millions of parents are.