Think it's fine. I get the impression people didn't really read the article.
"Hiromitsu Nakauchi, who leads teams at the University of Tokyo and Stanford University in California, plans to grow human cells in mouse and rat embryos and then transplant those embryos into surrogate animals. Nakauchi's ultimate goal is to produce animals with organs made of human cells that can, eventually, be transplanted into people."
He's not making half human half pig creatures or some shit. His goal is to create human organs to save lives.