After reading all the other posts, I just don't know.
But it seems there really are many ways to look at an unusual child's haircut and many quite strong opinions, both ways.
Which means that looks actually are more than just looks, for many people. In a way, hairstyles, dress and so on are a form of communication.
So, I could see people thinking it's just a little kid being allowed to have some harmless fun. Or strengthening her confidence in self-expression or self-determination. Those are valid outlooks, in my opinion.
I could also see it possibly teaching a little girl that appearance is how to get noticed and what makes you interesting. Which is, in its way, kind of the same thing people were saying we don't want, with the patriarchal rules for girls...
It could also set a young child up for nasty looks and comments from those who think it signals that the child and family are "chavvy." We see that is not an unusual opinion from this thread. Is that what you want an eight-year-old to possibly have to deal with?
So... my reply is I don't know. And that's final! 😂