My niece has a very large port wine stain all across one half of her face.
She as had laser treatment since she was a baby, it is under GA and not painful, my DB and BIL will continue as long as she wants to continue, she is now 13, and has had the laser treatment every 6 months from birth.
She is a beautiful vivacious girl with no hang ups about her face at all. She has always been accepted just as she is, and she is totally unfazed by it.
But it isn't simply cosmetic. They did lots of tests when she was little to see if there was any complications under her skin, or effects on her eye etc.
As she goes through puberty it is likely to thicken and darken quite a lot.
It effects her mouth, her lip is thicker and slightly miss shaped on one side and if this got worse it could start to effect her speech or eating. She has 2 extra eye teeth on that side too, possibly due to the extra blood circulation??
So she continues with the laser treatment, it has helped some, it is lighter I think than if it had gone untreated, but it hasn't removed it. It probably helps to offset the effects of puberty, but actually, none of us know that or by how much.
I don't think you can say that you shouldn't try to do something. It isn't always either/or. It isn't laser treatment OR societies attitude, it is both/and at the same time