The thing I was thinking about is that Nick is different as far as grimms go. In other words, he has a support group. They seem to share the same beliefs as he does and if the end is any indication, they go on hunts with him. I'm not saying he couldn't have been a grimm without them, but I think it would have been very different and in some ways, very difficult. So in essence, would they be grimms in spirit?
The best way to frustrate a cyberbully is to ignore him.