You're better than I am- I'd loudly tell them to shut up in a way that tests the limit of what audio editing can do to make the video family friendly again.You shouldn't have told them!
After the whole Matterhorn Queue Planters = Monorail 90 Degree Turn For Fantasyland Expansion thing, I realized many of these folks are on an entirely different level and it's best to just let them roll with it. I have vowed to not try and correct them or comment on their YouTube channels, and instead offer only encouragement and happy vibes.
I've even decided that if I'm ever seated behind them in a Small World boat or Millenium Falcon cockpit while they obnoxiously blabber into their iPhone, I am not going to be upset. I will calmly move myself into their frame and look really, really happy.
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I became disillusioned with vloggers when one of them used a reddit post of mine as the topic of a video- and quoted comments that were made by others in my post verbatim, without giving any kind of credit to the people who originally said what he was saying. When I inquired about it, the his fan community jumped on me that "he would never plagiarize", and that's when I realized I'm not the target demographic for these things- since I'm not 10 years old.