after reading the article, I wanted to check the study myself, but the article doesn't provide a link to it nor does it cite its researchers. That's a bad practice when reporting on scientific results. I am trying to contact the editors, asking for the proper input of a reference in the article. If anyone wants to join me, I emailed
https://www.theguardian.com/technology/2024/nov/30/instagram-actively-helping-to-spread-of-self-harm-among-teenagers-study-suggests
and explained the situation above. Let's hope it works.