According to their own blog, they dropped react because it was a difficult to use piece of technology that was slowing them down and making it difficult to offe

According to their own blog, they dropped react because it was a difficult to use piece of technology that was slowing them down and making it difficult to offer a top notch mobile experience. Yes, they also had difficulties hiring devs which know both native and react, but that's normal. Most mobile devs wouldn't touch react.