Let's see.. it was simultaneous and synchronized across the Anglophone countries in the early 2010s.
It's sort of peculiar for Puritanism to appear suddenly and simultaneously in widely distant countries that share a common language but have different cultures, right?
No, I think the change in phones and what they enabled in social media is a better explanation.
That started in Japan around 2000, a good ten years before the mental health crisis that struck kids at about 13 years of age in English speaking countries simultaneously.
And limited internet access on feature phone (i-mode, J-Sky, EZweb) was a thing from around 2000. Many students had it. So it strengthen original argument.
It's sort of peculiar for Puritanism to appear suddenly and simultaneously in widely distant countries that share a common language but have different cultures, right?
No, I think the change in phones and what they enabled in social media is a better explanation.