LG V30 design language is a copy of S8/S8+ from the front.
There isn't many ways to differentiate the front of a "bezel-less" phone... So i don't think the term copy is appropriate to use here. The back of the phone is different enough, and that's all that matters.
Have a look at Mi Mix 2 images. The design is different. There are always ways available to differentiate if enough effort and resources are put in. LG didn't.