It also makes a claim that the article wisely doesn't make. Compare the OP:
> The paper concludes that in-person bullying is the likeliest explanation for the rise in suicides when schools reopened.
No suggestion that any evidence was used in making that conclusion. The finding is that suicide rates dropped due to school closure.
Social media provides the ability for bullying to continue 24/7 and it does. It is a huge problem as text and posts go on and on late into the night.
Being always on and connected is a scourge for youth trying to find themselves in a historically and biologically tough time.
Not that I disagree with it generally being a horrible scourge on childhood experience.
Modern society is way to busy downplaying the importance of foundationally secure emotional connections. Busy instead pushing 'independence' and outsourcing of childrens' time and affection for the sake of income.
You'll find the suggested evidence at the end of the article.