YouTube embeds are are simple iframe of the video link you gave us, we don’t have access to any information about the content or tagging on the video. It’s up to YouTube to do content restriction for the embed.
Sweet, thanks for the reply straight from the source! Glad there's no potential metadata bleed to worry about. Since there doesn't appear to be any blocking/flagging on the embedded video, I guess I'll stick with this approach for as long as it works.
