For those who would minimize the effects of social media on teens, I would highly recommend looking at this report of Meta's own research on the matter, published after it was revealed in discovery by States AGs.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6069268
Or listen to just a few minutes of Patrick Boyle talking about them.
https://youtu.be/IUMUJgjDvU0?list=TLPQMDYwOTIwMjbX3y5H-uRecw...