Nothing there is specifying that parents can't get information about their child's health.
I would be curious what the actual laws are on that front.
If my teen patient asked me to keep their medical information from their parents, I was absolutely obliged to do so unless I, in my medical judgement, felt the parents needed to be informed. This is basically no different.
I'm assuming that the doctors involved are still obliged to contact the parents for anything that they deem the parents should be involved in, the parents just aren't getting default access to their teens medical records, so they can't access on demand every detail without having a reason to know it.
If that's how the law is set up, then it seems completely reasonable to me.
I frequently had parents push me to tell them about what their teens said in appointments, and I was very happy to be legally allowed not to share personal information with them if their teen didn't want it shared and they didn't need to be involved. Many teens will not disclose concerns if they fear their parents will find out. It's a huge issue, we need to be able to give them the appropriate degree of privacy, and at a certain point, that decision is one that should be determined by the teen and their healthcare professional, not their parents.
I have absolutely shared information with parents that teens didn't want shared, because it was a case where the parents needed to be informed. Such as the kid who let me know that he had seriously relapsed in his drug use and was engaging in life threatening behaviour. He begged me not to tell his parents, but I knew his parents were very supportive and wouldn't harm him as a result of this disclosure. He wanted me to keep it secret so that he could keep using.
The 16 year old Muslim girl who contracted oral herpes and had a meltdown about her family finding out? Yeah, I never said a word and was happy to legally be able to protect her privacy and give her some valtrex.