In Twitter's case, for starters, the time they heavily incentivized sharing phone numbers with them and then used that information to accidentally build an open phone number harvester.

https://www.eff.org/deeplinks/2020/02/how-twitters-default-s...

I think Twitter(and other social media) genuinely makes people's mental health worse. We have coined terms like "doomscrolling" and have studies to evidence that Instagram has a negative effect on the psychological wellbeing of teenage girls. I think that this can arguably fall into the category of "damage".

And even further.. what wrong?