I thought the TC's gave up bullying ages ago...
Anyways, this episode, while it sends a noble message, seems kinda overused today. I think it's the overabundance of anti-bullying episodes in various TV shows, not just Arthur/PBS Kids and all that. It seems that, either bullying's become that much of a problem, or TV shows are kind of exaggerating its presence.
It's become a tool, that's what it is.
Bullying has been a problem through all generations of kids, the problem is bullying was always something that was never approached very seriously, because it's an unfortunate part of childhood and kids being kids. It wasn't until recent years that some bullied kids took their own lives that started opening people's eyes and making them realize that bullying is a lot more serious than they thought. Since then, everybody's jumped on the anti-bullying bandwagon, but again, it seems like it's come to a point in time where it's become a tool more than anything.