Earlier quoted context omitted.
Let's assume that the lawsuits are poorly constructed. That does not necessarily mean that Facebook is harmless. It just means these lawsuits aren't sufficient to prove harm. Consider this analogy: Just because the DA doesn't have enough evidence to convict in a murder trial, that doesn't mean that the defendant is innocent. I just means they haven't been proven guilty.
We tend to presume innocence until proven otherwise.
Following from that, I can imagine a few viewpoints: 0) Parents are wrong, Facebook is awesome! 1) Facebook has violated existing laws (these lawsuits are exploring that space). 2) Parents should be frustrated with legislators for failing to regulate social media. 3) Parents should be angry with themselves for allowing their children to use Facebook's products.
I'm curious which (if any) of these viewpoints you hold.