Right but the tech creates some new forms of bullying, and they're in addition to the traditional forms of bullying. All of which still presumably exist.
For example, you can now bully people anonymously.
And you can bully people at any hour of the day or night - not just in public, in the brief periods between classes.
And with widespread camera phones you can not only make someone cry, you can video them crying, keep it forever, and send it to lots of people.
And don't forget that very fragile $300-1000 bit of electronics the kid is carrying, would be a real shame if something happened to it.
The fact that you can never escape the bullying is a huge differentiator from the before times, where coming home after school was a sanctuary (assuming you didn't come from an abusive household).
These days kids are 24/7 connected to what is going on in social media and group chats, and it never goes away.