hi answer to 1. Jack Dorsey
2. Online vs Reality. Social media itself is not the problem. It is the way people use it in place of actual communication and in-person socializing. “Friends” on social media may not actually be friends, and may even be strangers.
Increased usage. The more time spent on social media can lead to cyberbullying, social anxiety, depression, and exposure to content that is not age appropriate.
Social Media is addicting. When you’re playing a game or accomplishing a task, you seek to do it as well as you can. Once you succeed, your brain will give you a dose of dopamine and other happiness hormones, making you happy.