And you know what? Dylan had been watching as well. He was watching to see if he'd notice any set of bullies causing distress to other students' lives, but he hadn't noticed any.
But because he hadn't noticed any doesn't mean they haven't been doing so. Just that he hadn't seen them doing so.
The bullies that went around relaying Dylan's instruction to other bullies weren't part of the bullies causing distress to other students' lives for now, it was the other bullies they relayed Dylan's instructions to that were doing so.
They'd been trying to persuade them to stop, but they weren't listening. And because they haven't succeeded in persuading them, was the reason why they hadn't resumed preying on Ryan and their other victims.
And they kept on hoping Dylan wouldn't notice them one day as they kept trying to persuade them...it wasn't an easy thing at all.