100%It's good that the father gives a reaction on the bullying, but the social shaming of kids thiese days most stop. I really don't think posting such things on the internet is the right way to raise children.
If I had a kid that was kicked out of the bus, he probably had to walk to school too. But that had been something between me and my kid, and those few it would concern. Not half of the world.
I had taken away phone, computer time, pocket money, internet access etc etc. But not posted on social media...
Mark my word that child will be turn out more focused on retribution than contrition.
It's sad when children face more bullying from adults than their peers. It's clear now where that girl learned her behavior