*** Gu, arguably the most polarizing Olympian of her era, was unable to defend her gold medal in Monday’s freestyle ski big air event. But she rallied from seventh place to win the silver medal with a stellar final jump, becoming the most decorated freestyle skier in Olympic history. *** As Gu celebrated after her final jump, the NBC commentators gushed, not even a little ironically, “Who isn’t an Eileen Gu fan?” Gu certainly has her fans, and 2.3 million followers on Instagram. But she has plenty of critics. She created a firestorm seven years ago when, at age 15,...