I agree with the "extremely American", but the not getting upset is just also an extremely American adoption of elite mannerisms at all levels of society. Publically showing emotion is considered vulgar and low-class in many cultures.
All cultures have an elite segment. Elite segments are comprised of individuals who are generally well in control of their emotions and reasonably afraid of individuals who cannot control their emotions.
Interesting point about class signaling, but it doesn't explain Peppa Pig (or Bluey) showing a more healthy approach to teaching emotional regulation. The English certainly value that same kind of behavior after all.
Kids learn really fast that they can't just act out with their peers for fear of rejection by the group. It's extremely strong and parents need to teach the other half of it, dealing with negative emotions WITHOUT acting out. I feel like DT does a disservice here.
If so, it's a failure to uphold Fred Rogers' original ideas. He aimed to teach kids how to handle anger, frustration, and other negative emotions by finding safe outlets, not by suppressing them.
