I searched for “happy” and I tend to agree with the nightmarish look. Pretty much all of the results looked like they would love to use their happy teeth to eat you. Consistently hitting the uncanny valley
I've seen some people tackle the problem by running faces through a secondary AI that makes faces look "better" [1] though in this case "better" just means "pretty" by recent western standards, so that has its own set of shortcomings.
I'd be interested to hear what you think about the inanimate object searches?
The AI is not making the faces pretty, it's just restorating them, even the "ugly" ones. The AI was trained on FFHQ, a dataset that contains considerable variation in terms of age, ethnicity; also it was trained by Tencent ARC Lab, so I have no idea how the west has anything to do with this.