It's not just the tail lights. The shape of the rear end has a wierd blockyness to it, and not in the classic "boxy" Volvo sense. The general aesthetic reminds me a little of the current Euro-spec Passat (except the Passat is cleaner...and I don't like that either).
The lights really looked way better to me in the video reveal. If I was considering purchasing I don't think the lights would hold me back. Not saying they're fantastic just think irl they'll look fine.