1) for some of reason, blocking YT is not working on network. I need to figure it out. This problem could be limited to me.
2) YT is used by various educational sites to just w videos. So, if I block YT, they stop working. Note: I’m not referring to visiting YouTube.com directly, but embedded videos in other sites. So, this makes it hard to block YT.
What I have done instead is not installed the YouTube app on the TV and settop box. This has somewhat controlled YT use, but not fully unfortunately.