COPPA is a big topic right now so your last video is likely gaining traction just because everyone is freaking out about it. On YouTube you have the people using fear to get subs, the legit scared people, and the "nothing can touch me" style people. While the most simple solution is read COPPA law, it's been online since 1998.
As for you last video. I watched it, but I admit I skipped ahead twice when the subject steered away from the topic of the video and even upvoted. ✌️