I definitely think pretty privilege plays a part! I was a bit of an ugly duckling growing up and was bullied relentlessly at school for my stutter. But I had a "glow up" in high school and everyone just stopped caring about my stutter almost overnight. And it hasn't held me back since, apart from the occasional awkward interaction. I do think, however, that the confidence that comes with attractiveness also has a big impact. It's harder to make fun of or belittle someone who presents themselves with confidence.