Not if the rule includes easy rule circumvention. For example, if you could parent-control lock the camera roll to a white list of apps.
Want to post on social media so your friends would see? No can do, but you can send it to them through chat apps. Want to watch tik-tok? Go ahead. Want to post on tik-tok? It's easier to ask parent to allow it on the list, then circumvent, and then the parent would know that their child has a tik-tok presence, and — if necessary — could help the child by monitoring it.
The current options for parent control are very limited indeed. You can't switch most apps to readonly, even if you are okay with your child reading them — it's posting you are worried about.
But in ideal world there would be better options that would provide more privacy and security for the child, while helping parents restrict options if they fell their child isn't ready to use some of the functions.