Yes, it didn't last for long, it died down that same day it became a topic. And it was a good thing because it wouldn't have been nice at all if the teachers heard about it while students were conversing about it.
It would be easy for them to hear about it if it remained a tending topic for days, so it was a good thing for the bullies that the topic didn't last for long before it died down.
Why was it a good thing for the bullies? Because they'd be the one to get into trouble if the teachers heard about it...
So they were so happy when the topic died down. But just because students weren't talking about it that much anymore, doesn't mean they'd forgotten about it.
It was still embedded in their heads. Yes, it was still news that spread around.
The bullies did as Dylan instructed, they started informing all the other bullies they knew not to dare disturb Ryan and Dylan's lives, and to stop disturbing the lives of other students as well.