This might help you understand the copyright strike issue on youtube:
https://support.google.com/youtube/answer/2814000?hl=en
Three strikes shuts down a channel, and deleting a video that has a copyright strike does not resolve the issue. On Mike and Kim's latest video they said that four of the eight have been resolved. That leaves two more to keep the channel. Anyway, hope that clears things up a bit.
I agree with you in a way, because when they load complete wt videos with a little commentary or no commentary it is asking for trouble. People have left comments for Mike and Kim, warning them, but I do not think they get to read all the comments.