I don’t have yet this problem, but I am wondering if blocking YT makes the kids a disservice instead of teaching them how to manage and handle constant (online) distraction.
With age comes responsibility, so with time and coaching we remove restrictions. But it takes time, and I'm not willing to sacrifice my child's education in the meantime for YouTube and gaming distractions. I've grown to recognize there are certain distractions that are simply too difficult for young children to refuse.