To me, this sounds exactly like the sort of teasing and name-calling that made my schooldays hell for several years in my early teens, except that was in 3D, as we say now. If moving it to a fancy new medium - and one where it's on record for review later - has made the adult establishment take notice at last of the soul-wounding damage it can do, I think that's a big step forward.
I'm reminded of the first time my son got upset by name-calling in his primary school. I took it up with his teacher with no great hope that it would do any good, just so I could say I'd tried: but to my surprised delight she took it very seriously and took us to confront the culprit and make him apologise. I realised that what had changed was a serendipitous by-product of anti-racist policies. By making the teachers aware of the harm done by racist teasing, they'd had to learn that words hurt in any context, and take action even if (as this time) both the kids were white.
As Rowling wisely noted, thoughts can leave the deepest scars.