Hi @TeamYouTube!
We have been patiently waiting over the last 2 months for the comment section to be sorted out. We understand there was an extreme need to get rid of inappropriate comments YouTube wide. We have an amazing community on our channel and we closely monitor comments.
Alex you need to talk to Keren from KK&BabyJ. They have had their comments on for quite awhile, and yes their children on on their YT videos all the time. I would ask Keren & Khoa about how they are doing with the comments, etc. Good luck. I miss not being able to comment.