Just spoilering because this is a side note, but still relevant to the topic and I don't want my post getting tooo long.
This isn't about transgenderism. This is about an optician being a dick. The parents just could insist on getting a pair of purple glasses and that is that. There is no victory for trans people, because this is a stupid boy getting a pair of fucking purple glasses. Purple isn't even a "girl" color.
But LaBelle and many others like him seem to be far to far away to notice. This kid likes purple, maybe saw spyro, a (boy) dragon and liked it so he wanted his glasses like this. There is no gender expression and no sign of that this kid might rather be a girl or trigender or a nonbinary ogre.